12:39:53,495 ERROR [org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceController] (default task-12) Error while saving diagram with UUID [Process7].: java.lang.NullPointerException
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.getExtendedMetaData(BasicExtendedMetaData.java:2991)
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.getFeatureKind(BasicExtendedMetaData.java:412)
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.getAttributes(BasicExtendedMetaData.java:983)
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.getAllAttributes(BasicExtendedMetaData.java:904)
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.getLocalAttribute(BasicExtendedMetaData.java:703)
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.demandFeature(BasicExtendedMetaData.java:2027)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.customproperties.AttributeDefinition.setStringValue(AttributeDefinition.java:57)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.customproperties.StringAttribute.setValue(AttributeDefinition.java:107)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.customproperties.CustomAttribute$1.setValue(CustomAttribute.java:40)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.customproperties.CustomAttribute$1.setValue(CustomAttribute.java:35)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.customproperties.CustomAttribute.set(CustomAttribute.java:125)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.fromstunner.properties.ProcessPropertyWriter.setPackage(ProcessPropertyWriter.java:170)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.fromstunner.processes.RootProcessConverter.convertProcessNode(RootProcessConverter.java:72)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.fromstunner.processes.RootProcessConverter.convertProcess(RootProcessConverter.java:52)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.fromstunner.DefinitionsConverter.toDefinitions(DefinitionsConverter.java:54)
	at org.kie.workbench.common.stunner.bpmn.backend.BaseDirectDiagramMarshaller.marshall(BaseDirectDiagramMarshaller.java:123)
	at org.kie.workbench.common.stunner.core.backend.service.AbstractVFSDiagramService.serialize(AbstractVFSDiagramService.java:262)
	at org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceController.save(ProjectDiagramServiceController.java:171)
	at org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceImpl.save(ProjectDiagramServiceImpl.java:158)
	at org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceImpl.save(ProjectDiagramServiceImpl.java:50)
	at org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceImpl$Proxy$_$$_WeldClientProxy.save(Unknown Source)
	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.jboss.errai.bus.server.io.AbstractRPCMethodCallback.invokeMethodFromMessage(AbstractRPCMethodCallback.java:65)
	at org.jboss.errai.bus.server.io.ValueReplyRPCEndpointCallback.callback(ValueReplyRPCEndpointCallback.java:40)
	at org.jboss.errai.bus.server.io.RemoteServiceCallback.callback(RemoteServiceCallback.java:54)
	at org.jboss.errai.cdi.server.CDIExtensionPoints$2.callback(CDIExtensionPoints.java:448)
	at org.jboss.errai.bus.server.DeliveryPlan.deliver(DeliveryPlan.java:47)
	at org.jboss.errai.bus.server.ServerMessageBusImpl.sendGlobal(ServerMessageBusImpl.java:297)
	at org.jboss.errai.bus.server.SimpleDispatcher.dispatchGlobal(SimpleDispatcher.java:46)
	at org.jboss.errai.bus.server.service.ErraiServiceImpl.store(ErraiServiceImpl.java:96)
	at org.jboss.errai.bus.server.service.ErraiServiceImpl.store(ErraiServiceImpl.java:113)
	at org.jboss.errai.bus.server.servlet.DefaultBlockingServlet.doPost(DefaultBlockingServlet.java:144)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:706)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:791)
	at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
	at io.undertow.websockets.jsr.JsrWebSocketFilter.doFilter(JsrWebSocketFilter.java:173)
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at org.uberfire.ext.security.server.SecureHeadersFilter.doFilter(SecureHeadersFilter.java:110)
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at org.uberfire.ext.security.server.SecurityIntegrationFilter.doFilter(SecurityIntegrationFilter.java:70)
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at io.opentracing.contrib.jaxrs2.server.SpanFinishingFilter.doFilter(SpanFinishingFilter.java:55)
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
	at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
	at io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
	at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
	at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:132)
	at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
	at io.undertow.server.handlers.DisableCacheHandler.handleRequest(DisableCacheHandler.java:33)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:53)
	at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
	at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
	at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:59)
	at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
	at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
	at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
	at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
	at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
	at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
	at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
	at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
	at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
	at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
	at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
	at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
	at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
	at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
	at java.lang.Thread.run(Thread.java:748)

12:39:53,510 ERROR [org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceController] (default task-12) Error while saving diagram with UUID [Process7].: java.lang.NullPointerException
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.getExtendedMetaData(BasicExtendedMetaData.java:2991)
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.getFeatureKind(BasicExtendedMetaData.java:412)
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.getAttributes(BasicExtendedMetaData.java:983)
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.getAllAttributes(BasicExtendedMetaData.java:904)
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.getLocalAttribute(BasicExtendedMetaData.java:703)
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.demandFeature(BasicExtendedMetaData.java:2027)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.customproperties.AttributeDefinition.setStringValue(AttributeDefinition.java:57)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.customproperties.StringAttribute.setValue(AttributeDefinition.java:107)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.customproperties.CustomAttribute$1.setValue(CustomAttribute.java:40)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.customproperties.CustomAttribute$1.setValue(CustomAttribute.java:35)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.customproperties.CustomAttribute.set(CustomAttribute.java:125)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.fromstunner.properties.ProcessPropertyWriter.setPackage(ProcessPropertyWriter.java:170)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.fromstunner.processes.RootProcessConverter.convertProcessNode(RootProcessConverter.java:72)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.fromstunner.processes.RootProcessConverter.convertProcess(RootProcessConverter.java:52)
	at org.kie.workbench.common.stunner.bpmn.backend.converters.fromstunner.DefinitionsConverter.toDefinitions(DefinitionsConverter.java:54)
	at org.kie.workbench.common.stunner.bpmn.backend.BaseDirectDiagramMarshaller.marshall(BaseDirectDiagramMarshaller.java:123)
	at org.kie.workbench.common.stunner.core.backend.service.AbstractVFSDiagramService.serialize(AbstractVFSDiagramService.java:262)
	at org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceController.save(ProjectDiagramServiceController.java:171)
	at org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceImpl.save(ProjectDiagramServiceImpl.java:158)
	at org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceImpl.save(ProjectDiagramServiceImpl.java:50)
	at org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceImpl$Proxy$_$$_WeldClientProxy.save(Unknown Source)
	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.jboss.errai.bus.server.io.AbstractRPCMethodCallback.invokeMethodFromMessage(AbstractRPCMethodCallback.java:65)
	at org.jboss.errai.bus.server.io.ValueReplyRPCEndpointCallback.callback(ValueReplyRPCEndpointCallback.java:40)
	at org.jboss.errai.bus.server.io.RemoteServiceCallback.callback(RemoteServiceCallback.java:54)
	at org.jboss.errai.cdi.server.CDIExtensionPoints$2.callback(CDIExtensionPoints.java:448)
	at org.jboss.errai.bus.server.DeliveryPlan.deliver(DeliveryPlan.java:47)
	at org.jboss.errai.bus.server.ServerMessageBusImpl.sendGlobal(ServerMessageBusImpl.java:297)
	at org.jboss.errai.bus.server.SimpleDispatcher.dispatchGlobal(SimpleDispatcher.java:46)
	at org.jboss.errai.bus.server.service.ErraiServiceImpl.store(ErraiServiceImpl.java:96)
	at org.jboss.errai.bus.server.service.ErraiServiceImpl.store(ErraiServiceImpl.java:113)
	at org.jboss.errai.bus.server.servlet.DefaultBlockingServlet.doPost(DefaultBlockingServlet.java:144)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:706)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:791)
	at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
	at io.undertow.websockets.jsr.JsrWebSocketFilter.doFilter(JsrWebSocketFilter.java:173)
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at org.uberfire.ext.security.server.SecureHeadersFilter.doFilter(SecureHeadersFilter.java:110)
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at org.uberfire.ext.security.server.SecurityIntegrationFilter.doFilter(SecurityIntegrationFilter.java:70)
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at io.opentracing.contrib.jaxrs2.server.SpanFinishingFilter.doFilter(SpanFinishingFilter.java:55)
	at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
	at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
	at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
	at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
	at io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
	at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
	at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:132)
	at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
	at io.undertow.server.handlers.DisableCacheHandler.handleRequest(DisableCacheHandler.java:33)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:53)
	at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
	at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
	at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:59)
	at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
	at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
	at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
	at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68)
	at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
	at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
	at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
	at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
	at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
	at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
	at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
	at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
	at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
	at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
	at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
	at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
	at java.lang.Thread.run(Thread.java:748)

12:39:57,507 ERROR [org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceController] (default task-12) Error while saving diagram with UUID [Process7].: java.lang.NullPointerException

12:40:20,143 ERROR [org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceController] (default task-12) Error while saving diagram with UUID [Process7].: java.lang.NullPointerException

12:43:10,384 ERROR [org.kie.workbench.common.stunner.project.backend.service.ProjectDiagramServiceController] (default task-12) Error while saving diagram with UUID [Process7].: java.lang.NullPointerException