500 error if mqtt adapter is created

Hi,

we are running streampipes Version 0.68 inside kubernetes. At the moment we have the problem that if a mqtt adapter is created after clicking on "Start adapter" the message "Please wait while your adapter is generated" keeps spinning. If I look at the requests in the browser I can see that there is a 500 error.

If I open then streampipes in a new window under connect/adapters I can see the adapter but it is not shown in the pipeline editor.

In the logs of the backend pod I see this 500 error. What can be the cause of this?

10:12:29.643 SP [http-nio-8030-exec-2] INFO o.a.s.c.c.m.m.AdapterMasterManagement - Start adapter
10:12:29.647 SP [http-nio-8030-exec-2] INFO o.a.s.c.c.m.m.AdapterMasterManagement - Install source (source URL: http://backend:8030/streampipes-backend/api/v2/connect/name@email.de/master/sources/69f9ff51-f7f0-40b1-8948-20c76a269fa4 in backend over URL: http://backend:8030/streampipes-backend/api/v2/noauth/users/sysops@edi.gmbh/element
10:12:29.676 SP [http-nio-8030-exec-2] ERROR o.a.c.c.C.[.[.[.[.a.s.b.StreamPipesResourceConfig] - Servlet.service() for servlet [org.apache.streampipes.backend.StreamPipesResourceConfig] in context with path [/streampipes-backend] threw exception [javax.persistence.PersistenceException: javax.persistence.PersistenceException: javax.persistence.PersistenceException: java.lang.NullPointerException] with root cause
java.lang.NullPointerException: null
at io.fogsy.empire.core.empire.impl.EntityManagerImpl$MergeCascade.cascade(EntityManagerImpl.java:530)
at io.fogsy.empire.core.empire.impl.EntityManagerImpl$CascadeAction.test(EntityManagerImpl.java:580)
at io.fogsy.empire.core.empire.impl.EntityManagerImpl.cascadeOperation(EntityManagerImpl.java:516)
at io.fogsy.empire.core.empire.impl.EntityManagerImpl.persist(EntityManagerImpl.java:360)
at io.fogsy.empire.core.empire.impl.EntityManagerImpl$MergeCascade.cascade(EntityManagerImpl.java:535)
at io.fogsy.empire.core.empire.impl.EntityManagerImpl$CascadeAction.test(EntityManagerImpl.java:580)
at io.fogsy.empire.core.empire.impl.EntityManagerImpl.cascadeOperation(EntityManagerImpl.java:516)
at io.fogsy.empire.core.empire.impl.EntityManagerImpl.persist(EntityManagerImpl.java:360)
at io.fogsy.empire.core.empire.impl.EntityManagerImpl$MergeCascade.cascade(EntityManagerImpl.java:535)
at io.fogsy.empire.core.empire.impl.EntityManagerImpl$CascadeAction.test(EntityManagerImpl.java:584)
at io.fogsy.empire.core.empire.impl.EntityManagerImpl.cascadeOperation(EntityManagerImpl.java:516)
at io.fogsy.empire.core.empire.impl.EntityManagerImpl.persist(EntityManagerImpl.java:360)
at org.apache.streampipes.storage.rdf4j.impl.PipelineElementStorageRequests.storeDataStream(PipelineElementStorageRequests.java:57)
at org.apache.streampipes.storage.rdf4j.impl.PipelineElementInMemoryStorage.storeDataStream(PipelineElementInMemoryStorage.java:104)
at org.apache.streampipes.manager.verification.DataStreamVerifier.store(DataStreamVerifier.java:51)
at org.apache.streampipes.manager.verification.ElementVerifier.verifyAndAdd(ElementVerifier.java:100)
at org.apache.streampipes.connect.container.master.management.AdapterMasterManagement.installDataSource(AdapterMasterManagement.java:125)
at org.apache.streampipes.connect.container.master.management.AdapterMasterManagement.addAdapter(AdapterMasterManagement.java:118)
at org.apache.streampipes.connect.container.master.rest.AdapterResource.addAdapter(AdapterResource.java:56)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$$Lambda$700/0x000000002406e8f0.invoke(Unknown Source)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:176)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:475)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:397)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:81)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:255)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:234)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680)
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:394)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:366)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:319)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:450)
at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:387)
at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1597)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:823)