I’m running a Pi with OpenHAB2 which has been stable for a while. Given the troubles I had setting it up, I had tried to avoid updating and had been running 2.3.0 SNAPSHOT for a while (August 2017 ish).
Anyway, BasicUI wasn’t showing the right status of my Hue switches, so I figured what the hell, and updated…
All went well, but now ive started to get Error 500 after a while - ONLY on BasicUI (PaperUI & Habmin work ok);
HTTP ERROR 500
Problem accessing /basicui/app. Reason:
Server Error
Caused by:
java.lang.NullPointerException
at org.eclipse.smarthome.ui.basic.internal.render.SetpointRenderer.renderWidget(SetpointRenderer.java:65)
at org.eclipse.smarthome.ui.basic.internal.render.PageRenderer.renderWidget(PageRenderer.java:194)
at org.eclipse.smarthome.ui.basic.internal.render.PageRenderer.processChildren(PageRenderer.java:160)
at org.eclipse.smarthome.ui.basic.internal.render.PageRenderer.processChildren(PageRenderer.java:181)
at org.eclipse.smarthome.ui.basic.internal.render.PageRenderer.processPage(PageRenderer.java:124)
at org.eclipse.smarthome.ui.basic.internal.servlet.WebAppServlet.service(WebAppServlet.java:188)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:848)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:584)
at org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:71)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)
at org.ops4j.pax.web.service.jetty.internal.HttpServiceContext.doHandle(HttpServiceContext.java:284)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:80)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
at org.eclipse.jetty.server.Server.handle(Server.java:534)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
at java.lang.Thread.run(Thread.java:748)
Clearing the UserData Config & UserData TMP dirs bring it back to life, but only for a few hours until whatever is triggering it, happens again.
Any ideas?