Hi,
I’m using Cuba platform 7.2 and run into a strange error which I can’t trace down and fix.
I’m getting the below error when opening a Editor screen.
java.lang.ClassCastException: com.haulmont.cuba.gui.model.impl.ObservableList cannot be cast to com.haulmont.cuba.core.entity.Entity
at com.haulmont.cuba.web.gui.components.WebPickerField.setValue(WebPickerField.java:61)
at com.haulmont.cuba.gui.components.data.value.ValueBinder$ValueBindingImpl.valueSourceStateChanged(ValueBinder.java:291)
at com.haulmont.bali.events.EventHub.publish(EventHub.java:170)
at com.haulmont.cuba.gui.components.data.value.ContainerValueSource.setState(ContainerValueSource.java:215)
at com.haulmont.cuba.gui.components.data.value.ContainerValueSource.containerItemChanged(ContainerValueSource.java:222)
at com.haulmont.bali.events.EventHub.publish(EventHub.java:170)
at com.haulmont.cuba.gui.model.impl.InstanceContainerImpl.fireItemChanged(InstanceContainerImpl.java:163)
at com.haulmont.cuba.gui.model.impl.InstanceContainerImpl.setItem(InstanceContainerImpl.java:94)
at com.haulmont.cuba.gui.model.impl.InstanceLoaderImpl.load(InstanceLoaderImpl.java:117)
at com.haulmont.cuba.web.gui.components.dataloadcoordinator.OnFrameOwnerEventLoadTrigger.load(OnFrameOwnerEventLoadTrigger.java:48)
at com.haulmont.cuba.web.gui.components.dataloadcoordinator.OnFrameOwnerEventLoadTrigger.lambda$new$0(OnFrameOwnerEventLoadTrigger.java:39)
at com.haulmont.bali.events.EventHub.publish(EventHub.java:170)
at com.haulmont.cuba.gui.screen.Screen.fireEvent(Screen.java:128)
at com.haulmont.cuba.gui.screen.UiControllerUtils.fireEvent(UiControllerUtils.java:60)
at com.haulmont.cuba.web.sys.WebScreens.show(WebScreens.java:432)
at com.haulmont.cuba.gui.screen.Screen.show(Screen.java:309)
at com.haulmont.cuba.gui.actions.list.EditAction.execute(EditAction.java:349)
at com.haulmont.cuba.gui.actions.list.EditAction.actionPerform(EditAction.java:297)
at com.haulmont.cuba.web.gui.components.WebAbstractDataGrid.handleDoubleClickAction(WebAbstractDataGrid.java:600)
at com.haulmont.cuba.web.gui.components.WebAbstractDataGrid.onItemClick(WebAbstractDataGrid.java:375)
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 com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:496)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:273)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:237)
at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1041)
at com.vaadin.ui.Grid.access$500(Grid.java:145)
at com.vaadin.ui.Grid$GridServerRpcImpl.itemClick(Grid.java:646)
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 com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:153)
at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:115)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:431)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:396)
at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:260)
at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:82)
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40)
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1578)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:425)
at com.haulmont.cuba.web.sys.CubaApplicationServlet.serviceAppRequest(CubaApplicationServlet.java:329)
at com.haulmont.cuba.web.sys.CubaApplicationServlet.service(CubaApplicationServlet.java:215)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
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.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108)
at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:74)
at com.haulmont.cuba.web.sys.CubaHttpFilter.doFilter(CubaHttpFilter.java:93)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Kindly help me to fix this error.
Thanks,
Hari