Java Exceptions at Startup with the Experimental Rules Engine

[Burzin_Sumariwalla]

Platform Information

• Hardware: Raspberry Pi 3B+
• OS: Raspberry Pi OS (32 Bit - Buster)
• Java Runtime Environment:
• openjdk version “11.0.7” 2020-04-14
• OpenJDK Runtime Environment (build 11.0.7+10-post-Raspbian-3deb10u1)
• OpenJDK Server VM (build 11.0.7+10-post-Raspbian-3deb10u1, mixed mode)
• openHAB 2.5.5 (Release Build)

Hello openHAB Community,

I am trying to migrate to the Next Generation Rules Engine using Jython. I originally tried to Beta test the Jython addon with helper libraries. However, I’m throwing Java exceptions at startup. Does anyone have any suggestions?

[beta testers wanted!] Jython addon w/ helper libraries (requires OH 2.5.x)

I just submitted a PR that adds a core feature for a JythonScriptEngineFactory and it would be great to have some testers! Basically, this will allow for the installation of Jython including the core and community helper libraries through Paper UI, once the PR is merged. If you’d like to test it, you’ll need to… Have OH 2.5.x (S1778) or newer Shutdown OH Backup OH Download the addon and copy to $OPENHAB_HOME/addons/ (see here for more details). The jar contains the core and community helper l…

However, that failed at startup as I recieved errors similar to:

[ERROR] [le.script.scriptenginefactory.jython] - bundle org.openhab.core.automation.module.script.scriptenginefactory.jython:2.5.0.202001221001 (313)[org.openhab.core.automation.module.script.scriptenginefactory.jython.JythonScriptEngineFactory(295)] :  Error during instantiation of the implementation object

Thinking this was a problem with the Beta help libraries, I stopped openHAB and deleted the bundle from /usr/share/openhab2/addon I then tried following the directions here for the non-Beta.

https://openhab-scripters.github.io/openhab-helper-libraries/Getting%20Started/Installation.html

However, was still getting the error.

[ERROR] [le.script.scriptenginefactory.jython] - bundle org.openhab.core.automation.module.script.scriptenginefactory.jython:2.5.0.202001221001 (313)[org.openhab.core.automation.module.script.scriptenginefactory.jython.JythonScriptEngineFactory(295)] :  Error during instantiation of the implementation object

I uninstalled the “Rules Engine (Experimental)” using the PaperUI, and restarted openHAB. However, I got the following.

[WARN ] [org.apache.felix.fileinstall        ] - Error while starting bundle: file:/usr/share/openhab2/addons/org.openhab.core.automation.module.script.scriptenginefactory.jython-2.5.0-SNAPSHOT.jar
org.osgi.framework.BundleException: Could not resolve module: org.openhab.core.automation.module.script.scriptenginefactory.jython [313]
  Unresolved requirement: Import-Package: org.openhab.core.automation.module.script; version="[2.5.0,3.0.0)"

Next, I uninstalled the bundle using the Karaf console, stopped openHAB, and cleared the cache (sudo openhab-cli clean-cache), but now I’m getting the following.

[ERROR] [penhab.core.automation.module.script] - bundle org.openhab.core.automation.module.script:2.5.0 (238)[org.openhab.core.automation.module.script.internal.ScriptEngineManagerImpl(222)] : The addScriptEngineFactory method ha
s thrown an exception
java.lang.NoClassDefFoundError: javax/script/ScriptEngineFactory
	at java.lang.ClassLoader.findBootstrapClass(Native Method) ~[?:?]
	at java.lang.ClassLoader.findBootstrapClassOrNull(ClassLoader.java:1258) ~[?:?]
	at java.lang.System$2.findBootstrapClassOrNull(System.java:2131) ~[?:?]
	at jdk.internal.loader.ClassLoaders$BootClassLoader.loadClassOrNull(ClassLoaders.java:118) ~[?:?]
	at jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:616) ~[?:?]
	at jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:579) ~[?:?]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:522) ~[?:?]
	at org.eclipse.osgi.internal.framework.ContextFinder.loadClass(ContextFinder.java:127) ~[org.eclipse.osgi-3.12.100.jar:?]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:522) ~[?:?]
	at java.lang.Class.forName0(Native Method) ~[?:?]
	at java.lang.Class.forName(Class.java:398) ~[?:?]
	at java.util.ServiceLoader$LazyClassPathLookupIterator.nextProviderClass(ServiceLoader.java:1209) ~[?:?]
	at java.util.ServiceLoader$LazyClassPathLookupIterator.hasNextService(ServiceLoader.java:1220) ~[?:?]
	at java.util.ServiceLoader$LazyClassPathLookupIterator.hasNext(ServiceLoader.java:1264) ~[?:?]
	at java.util.ServiceLoader$2.hasNext(ServiceLoader.java:1299) ~[?:?]
	at java.util.ServiceLoader$3.hasNext(ServiceLoader.java:1384) ~[?:?]
	at javax.script.ScriptEngineManager.initEngines(ScriptEngineManager.java:123) ~[java.scripting:?]
	at javax.script.ScriptEngineManager.init(ScriptEngineManager.java:87) ~[java.scripting:?]
	at javax.script.ScriptEngineManager.<init>(ScriptEngineManager.java:62) ~[java.scripting:?]
	at org.openhab.core.automation.module.script.ScriptEngineFactory.<clinit>(ScriptEngineFactory.java:35) ~[?:?]
	at org.openhab.core.automation.module.script.AbstractScriptEngineFactory.getScriptTypes(AbstractScriptEngineFactory.java:42) ~[?:?]
	at org.openhab.core.automation.module.script.internal.ScriptEngineManagerImpl.addScriptEngineFactory(ScriptEngineManagerImpl.java:63) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
	at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
	at org.apache.felix.scr.impl.inject.methods.BaseMethod.invokeMethod(BaseMethod.java:228) ~[bundleFile:?]
	at org.apache.felix.scr.impl.inject.methods.BaseMethod.access$500(BaseMethod.java:41) ~[bundleFile:?]
	at org.apache.felix.scr.impl.inject.methods.BaseMethod$Resolved.invoke(BaseMethod.java:664) ~[bundleFile:?]
	at org.apache.felix.scr.impl.inject.methods.BaseMethod.invoke(BaseMethod.java:510) [bundleFile:?]
	at org.apache.felix.scr.impl.inject.methods.BindMethod.invoke(BindMethod.java:42) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.DependencyManager.doInvokeBindMethod(DependencyManager.java:1813) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.DependencyManager.bindDependency(DependencyManager.java:1637) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.DependencyManager.bind(DependencyManager.java:1624) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.SingleComponentManager.createImplementationObject(SingleComponentManager.java:307) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.SingleComponentManager.createComponent(SingleComponentManager.java:114) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:982) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:955) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:900) [bundleFile:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse$1.run(ServiceFactoryUse.java:212) [org.eclipse.osgi-3.12.100.jar:?]
	at java.security.AccessController.doPrivileged(Native Method) [?:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse.factoryGetService(ServiceFactoryUse.java:210) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse.getService(ServiceFactoryUse.java:111) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceConsumer$2.getService(ServiceConsumer.java:45) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getService(ServiceRegistrationImpl.java:508) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.getService(ServiceRegistry.java:461) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.framework.BundleContextImpl.getService(BundleContextImpl.java:624) [org.eclipse.osgi-3.12.100.jar:?]
	at com.eclipsesource.jaxrs.publisher.internal.ResourceTracker.addingService(ResourceTracker.java:39) [bundleFile:?]
	at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:941) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:870) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:901) [osgi.core-6.0.0.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:109) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:920) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:862) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:801) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:127) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:225) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:469) [org.eclipse.osgi-3.12.100.jar:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:906) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:892) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:128) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:959) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:732) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:1045) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:999) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1216) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1137) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:944) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:880) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1168) [bundleFile:?]
	at org.apache.felix.scr.impl.BundleComponentActivator$ListenerInfo.serviceChanged(BundleComponentActivator.java:125) [bundleFile:?]
	at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:109) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:920) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:862) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:801) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:127) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:225) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:469) [org.eclipse.osgi-3.12.100.jar:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:906) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:892) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:128) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:959) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:732) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.enableInternal(AbstractComponentManager.java:666) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:432) [bundleFile:?]
	at org.apache.felix.scr.impl.manager.ConfigurableComponentHolder.enableComponents(ConfigurableComponentHolder.java:665) [bundleFile:?]
	at org.apache.felix.scr.impl.BundleComponentActivator.initialEnable(BundleComponentActivator.java:338) [bundleFile:?]
	at org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:382) [bundleFile:?]
	at org.apache.felix.scr.impl.Activator.access$200(Activator.java:49) [bundleFile:?]
	at org.apache.felix.scr.impl.Activator$ScrExtension.start(Activator.java:264) [bundleFile:?]
	at org.apache.felix.scr.impl.AbstractExtender.createExtension(AbstractExtender.java:196) [bundleFile:?]
	at org.apache.felix.scr.impl.AbstractExtender.modifiedBundle(AbstractExtender.java:169) [bundleFile:?]
	at org.apache.felix.scr.impl.AbstractExtender.modifiedBundle(AbstractExtender.java:49) [bundleFile:?]
	at org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:482) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:415) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:232) [osgi.core-6.0.0.jar:?]
	at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444) [osgi.core-6.0.0.jar:?]
	at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:908) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEventPrivileged(EquinoxEventPublisher.java:213) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:120) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:112) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor.publishModuleEvent(EquinoxContainerAdaptor.java:168) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.container.Module.publishEvent(Module.java:476) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.container.Module.start(Module.java:467) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1634) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1614) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1585) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1528) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) [org.eclipse.osgi-3.12.100.jar:?]
	at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340) [org.eclipse.osgi-3.12.100.jar:?]

Using the Karaf console again, I see this.

openhab> bundle:list | grep Automation
236 │ Active │  80 │ 2.5.0                   │ openHAB Core :: Bundles :: Automation
237 │ Active │  80 │ 2.5.0                   │ openHAB Core :: Bundles :: Automation Media Modules
238 │ Active │  80 │ 2.5.0                   │ openHAB Core :: Bundles :: Automation Script Modules
239 │ Active │  80 │ 2.5.0                   │ openHAB Core :: Bundles :: Automation Script RuleSupport
240 │ Active │  80 │ 2.5.0                   │ openHAB Core :: Bundles :: Automation REST API

Does anyone have any ideas as to how to solve the issue? Ideally, I’d like to experiment with the Beta that I originally tried to install.

Regards,
Burzin

[mstormi (Markus Storm)]

Upfront: use code fences please.

@Burzin_Sumariwalla

OS: Raspberry Pi OS (32 Bit - Buster)

Do you mean Raspbian ?

@Burzin_Sumariwalla

openjdk version “11.0.7” 2020-04-14

We do not recommend neither to use Oracle OpenJDK nor Java 11.
Can’t tell for sure but that’s likely to cause your problems.

As you have a RPi, why don’t you use openHABian ? It has a validated OS/Java combo.

[Burzin_Sumariwalla]

Hi Markus,

Thanks for responding Raspbian and Raspberry Pi OS are synonymous, with Raspberry Pi OS being the new name. See: https://en.wikipedia.org/wiki/Raspberry_Pi_OS

Thanks for the tip on Java. I will take a look at that now.

Regards,
Burzin

[Burzin_Sumariwalla]

Java 11 was apparently the problem. I installed zulu-embeded 8 and everything appears to be in order

[mstormi (Markus Storm)]

@5iver have you tried any Java11 with Jython ?
If not, there’s an opportunity now

[5iver (Scott Rushworth)]

Yes, but best to use 2.7.2. BTW, I was wondering why you suggest to people not to use OpenJDK? It has flawlessly for me with OH.

[mstormi (Markus Storm)]

Well, cannot answer that with a single reason right away.
It used to have a couple of quirks and we switched to Azul Zulu in openHABian long ago … we haven’t been using OpenJDK for ages since so do not have experiences to share hence cannot recommend. You’re then the only one I know of to use it. Remember we’re talking RPi. This post here was the first in a long time to use it I heard of, it’s the target configuration of openHABian, and it failed right away.
So sort of a proof to our strategy (of course it’s just a single instance).
Also, with Oracle there’s always licensing/support issues that may apply to some people.

[kovacsi2899]

I have tried these verisions for windows10:

IMPLEMENTOR="Oracle Corporation"
IMPLEMENTOR_VERSION="18.9"
JAVA_VERSION="11"
JAVA_VERSION_DATE="2018-09-25"
OS_ARCH="x86_64"
OS_NAME="Windows"
SOURCE=".:76072a077ee1"


BUILD_TYPE="commercial"
IMPLEMENTOR="Oracle Corporation"
IMPLEMENTOR_VERSION="18.9"
JAVA_VERSION="11.0.5"
JAVA_VERSION_DATE="2019-10-15"
OS_ARCH="x86_64"
OS_NAME="Windows"
SOURCE=".:09ea33df257b open:b4140fc50ca7"

None of these versions works. Openhab even does not start so I can’t see anything from openhab.log.
I use this version openHAB 2.5.6 Build #135 with jython-standalone-2.7.0.
2.7.2 does not work for me.
Curent version what works for me is:

BUILD_TYPE="commercial"
JAVA_VERSION="1.8.0_231"
OS_NAME="Windows"
OS_VERSION="5.2"
OS_ARCH="amd64"

[ndye (Ethan Dye)]

Try installing Zulu for windows.

[5iver (Scott Rushworth)]

@kovacsi2899

I use this version openHAB 2.5.6 Build #135 with jython-standalone-2.7.0.
2.7.2 does not work for me.

As I said, you will need to use the beta Jython addon, but I have not yet provided a jar that uses Jython 2.7.2. I have split the addon into two, to separate the libraries, and will provide an uipdate this weekend.

[I’ve sent you a PM with a preview}

[kovacsi2899]

I have tried Zulu: zulu11.39.15-ca-jre11.0.7-win_x64
But it stops at the end of a strange message:

WARNING: Illegal reflective access by org.jboss.netty.util.internal.ByteBufferUtil (file:/C:/openhab2/userdata/cache/org.eclipse.osgi/275/0/.cp/lib/netty-3.9.0.Final.jar) to method java.nio.DirectByteBuffer.cleaner()

Therefore I cleaned tmp and catch folders and restarted twice but same issue happened.
Below the full log if it helps.

Launching the openHAB runtime...
org.ops4j.pax.url.wrap [org.ops4j.pax.url.commons.handler.HandlerActivator] DEBUG : Handler for protocols [wrap] started

                          __  _____    ____
  ____  ____  ___  ____  / / / /   |  / __ )
 / __ \/ __ \/ _ \/ __ \/ /_/ / /| | / __  |
/ /_/ / /_/ /  __/ / / / __  / ___ |/ /_/ /
\____/ .___/\___/_/ /_/_/ /_/_/  |_/_____/
    /_/                        2.5.6-SNAPSHOT
                               Build #135

Hit '<tab>' for a list of available commands
and '[cmd] --help' for help on a specific command.
Hit '<ctrl-d>' or type 'system:shutdown' or 'logout' to shutdown openHAB.

openhab> Exception in thread "OkHttp Dispatcher" Exception in thread "OkHttp Dispatcher" Exception in thread "OkHttp Dispatcher" java.lang.IllegalArgumentException: unsupported auth scheme: [Basic realm="gSOAP Web Service"]
        at com.burgstaller.okhttp.digest.DigestAuthenticator.findDigestHeader(DigestAuthenticator.java:199)
        at com.burgstaller.okhttp.digest.DigestAuthenticator.authenticate(DigestAuthenticator.java:164)
        at com.burgstaller.okhttp.CachingAuthenticatorDecorator.authenticate(CachingAuthenticatorDecorator.java:35)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.followUpRequest(RetryAndFollowUpInterceptor.kt:213)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:102)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at com.burgstaller.okhttp.AuthenticationCacheInterceptor.intercept(AuthenticationCacheInterceptor.java:49)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.kt:184)
        at okhttp3.RealCall$AsyncCall.run(RealCall.kt:136)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.base/java.lang.Thread.run(Unknown Source)
java.lang.IllegalArgumentException: unsupported auth scheme: [Basic realm="gSOAP Web Service"]
        at com.burgstaller.okhttp.digest.DigestAuthenticator.findDigestHeader(DigestAuthenticator.java:199)
        at com.burgstaller.okhttp.digest.DigestAuthenticator.authenticate(DigestAuthenticator.java:164)
        at com.burgstaller.okhttp.CachingAuthenticatorDecorator.authenticate(CachingAuthenticatorDecorator.java:35)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.followUpRequest(RetryAndFollowUpInterceptor.kt:213)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:102)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at com.burgstaller.okhttp.AuthenticationCacheInterceptor.intercept(AuthenticationCacheInterceptor.java:49)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.kt:184)
        at okhttp3.RealCall$AsyncCall.run(RealCall.kt:136)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.base/java.lang.Thread.run(Unknown Source)
java.lang.IllegalArgumentException: unsupported auth scheme: [Basic realm="gSOAP Web Service"]
        at com.burgstaller.okhttp.digest.DigestAuthenticator.findDigestHeader(DigestAuthenticator.java:199)
        at com.burgstaller.okhttp.digest.DigestAuthenticator.authenticate(DigestAuthenticator.java:164)
        at com.burgstaller.okhttp.CachingAuthenticatorDecorator.authenticate(CachingAuthenticatorDecorator.java:35)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.followUpRequest(RetryAndFollowUpInterceptor.kt:213)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:102)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at com.burgstaller.okhttp.AuthenticationCacheInterceptor.intercept(AuthenticationCacheInterceptor.java:49)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.kt:184)
        at okhttp3.RealCall$AsyncCall.run(RealCall.kt:136)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.base/java.lang.Thread.run(Unknown Source)
openhab> WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.jboss.netty.util.internal.ByteBufferUtil (file:/C:/openhab2/userdata/cache/org.eclipse.osgi/275/0/.cp/lib/netty-3.9.0.Final.jar) to method java.nio.DirectByteBuffer.cleaner()
WARNING: Please consider reporting this to the maintainers of org.jboss.netty.util.internal.ByteBufferUtil
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release






Launching the openHAB runtime...

                          __  _____    ____
  ____  ____  ___  ____  / / / /   |  / __ )
 / __ \/ __ \/ _ \/ __ \/ /_/ / /| | / __  |
/ /_/ / /_/ /  __/ / / / __  / ___ |/ /_/ /
\____/ .___/\___/_/ /_/_/ /_/_/  |_/_____/
    /_/                        2.5.6-SNAPSHOT
                               Build #135

Hit '<tab>' for a list of available commands
and '[cmd] --help' for help on a specific command.
Hit '<ctrl-d>' or type 'system:shutdown' or 'logout' to shutdown openHAB.

openhab> Exception in thread "OkHttp Dispatcher" Exception in thread "OkHttp Dispatcher" Exception in thread "OkHttp Dispatcher" java.lang.IllegalArgumentException: unsupported auth scheme: [Basic realm="gSOAP Web Service"]
        at com.burgstaller.okhttp.digest.DigestAuthenticator.findDigestHeader(DigestAuthenticator.java:199)
        at com.burgstaller.okhttp.digest.DigestAuthenticator.authenticate(DigestAuthenticator.java:164)
        at com.burgstaller.okhttp.CachingAuthenticatorDecorator.authenticate(CachingAuthenticatorDecorator.java:35)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.followUpRequest(RetryAndFollowUpInterceptor.kt:213)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:102)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at com.burgstaller.okhttp.AuthenticationCacheInterceptor.intercept(AuthenticationCacheInterceptor.java:49)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.kt:184)
        at okhttp3.RealCall$AsyncCall.run(RealCall.kt:136)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.base/java.lang.Thread.run(Unknown Source)
java.lang.IllegalArgumentException: unsupported auth scheme: [Basic realm="gSOAP Web Service"]
        at com.burgstaller.okhttp.digest.DigestAuthenticator.findDigestHeader(DigestAuthenticator.java:199)
        at com.burgstaller.okhttp.digest.DigestAuthenticator.authenticate(DigestAuthenticator.java:164)
        at com.burgstaller.okhttp.CachingAuthenticatorDecorator.authenticate(CachingAuthenticatorDecorator.java:35)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.followUpRequest(RetryAndFollowUpInterceptor.kt:213)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:102)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at com.burgstaller.okhttp.AuthenticationCacheInterceptor.intercept(AuthenticationCacheInterceptor.java:49)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.kt:184)
        at okhttp3.RealCall$AsyncCall.run(RealCall.kt:136)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.base/java.lang.Thread.run(Unknown Source)
java.lang.IllegalArgumentException: unsupported auth scheme: [Basic realm="gSOAP Web Service"]
        at com.burgstaller.okhttp.digest.DigestAuthenticator.findDigestHeader(DigestAuthenticator.java:199)
        at com.burgstaller.okhttp.digest.DigestAuthenticator.authenticate(DigestAuthenticator.java:164)
        at com.burgstaller.okhttp.CachingAuthenticatorDecorator.authenticate(CachingAuthenticatorDecorator.java:35)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.followUpRequest(RetryAndFollowUpInterceptor.kt:213)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:102)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at com.burgstaller.okhttp.AuthenticationCacheInterceptor.intercept(AuthenticationCacheInterceptor.java:49)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:112)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:87)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.kt:184)
        at okhttp3.RealCall$AsyncCall.run(RealCall.kt:136)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.base/java.lang.Thread.run(Unknown Source)
openhab>
Launching the openHAB runtime...
org.ops4j.pax.url.wrap [org.ops4j.pax.url.commons.handler.HandlerActivator] DEBUG : Handler for protocols [wrap] started

                          __  _____    ____
  ____  ____  ___  ____  / / / /   |  / __ )
 / __ \/ __ \/ _ \/ __ \/ /_/ / /| | / __  |
/ /_/ / /_/ /  __/ / / / __  / ___ |/ /_/ /
\____/ .___/\___/_/ /_/_/ /_/_/  |_/_____/
    /_/                        2.5.6-SNAPSHOT
                               Build #135

Hit '<tab>' for a list of available commands
and '[cmd] --help' for help on a specific command.
Hit '<ctrl-d>' or type 'system:shutdown' or 'logout' to shutdown openHAB.

openhab> WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.jboss.netty.util.internal.ByteBufferUtil (file:/C:/openhab2/userdata/cache/org.eclipse.osgi/275/0/.cp/lib/netty-3.9.0.Final.jar) to method java.nio.DirectByteBuffer.cleaner()
WARNING: Please consider reporting this to the maintainers of org.jboss.netty.util.internal.ByteBufferUtil
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

[ndye (Ethan Dye)]

Java 11 is not fully supported for openHAB 2 try using Java 8.

[kovacsi2899]

I know and I use Java 8. Request was to try Java 11 and I did.

[ndye (Ethan Dye)]

Ah, ok. This is not the first time that there have been issues with the Experimental Rule Engine and Java 11.