Tried this binding with our brand new kasai multi split ac which uses the midea protocol. But same error as the other guys here 
I’m running openHAB 3.1 on build #2358. Any help would be appreciated on how to fix this error.
2021-06-04 16:38:20.123 [WARN ] [org.apache.felix.fileinstall ] - Error while starting bundle: file:/openhab/addons/org.openhab.binding.mideaac-3.1.0-SNAPSHOT.jar
org.osgi.framework.BundleException: Could not resolve module: org.openhab.binding.mideaac [274]
Unresolved requirement: Import-Package: org.apache.commons.lang; version="[2.6.0,3.0.0)"
at org.eclipse.osgi.container.Module.start(Module.java:463) ~[org.eclipse.osgi-3.16.200.jar:?]
at org.eclipse.osgi.internal.framework.EquinoxBundle.start(EquinoxBundle.java:440) ~[org.eclipse.osgi-3.16.200.jar:?]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundle(DirectoryWatcher.java:1260) [bundleFile:3.6.8]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundles(DirectoryWatcher.java:1233) [bundleFile:3.6.8]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.doProcess(DirectoryWatcher.java:520) [bundleFile:3.6.8]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.process(DirectoryWatcher.java:365) [bundleFile:3.6.8]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.run(DirectoryWatcher.java:316) [bundleFile:3.6.8]
It probably is related to latest changes in openHAB itself. See Removal of dependency on 'org.apache.commons.*' · Issue #7722 · openhab/openhab-addons · GitHub for more information.
With the latest openHAB snapshot 3.1 build #2414 I get another similar exception
2021-06-04 17:00:03.154 [WARN ] [org.apache.felix.fileinstall ] - Error while starting bundle: file:/openhab/addons/org.openhab.binding.mideaac-3.1.0-SNAPSHOT.jar
org.osgi.framework.BundleException: Could not resolve module: org.openhab.binding.mideaac [235]
Unresolved requirement: Import-Package: javax.measure; version="[1.0.0,2.0.0)"
at org.eclipse.osgi.container.Module.start(Module.java:463) ~[org.eclipse.osgi-3.16.200.jar:?]
at org.eclipse.osgi.internal.framework.EquinoxBundle.start(EquinoxBundle.java:440) ~[org.eclipse.osgi-3.16.200.jar:?]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundle(DirectoryWatcher.java:1260) [bundleFile:3.6.8]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundles(DirectoryWatcher.java:1233) [bundleFile:3.6.8]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.doProcess(DirectoryWatcher.java:520) [bundleFile:3.6.8]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.process(DirectoryWatcher.java:365) [bundleFile:3.6.8]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.run(DirectoryWatcher.java:316) [bundleFile:3.6.8]
So I guess the binding code needs to be updated to work with the latest openHAB changes. I could have a look in the code but don’t know how the process of updating and building a new bundle looks like?