After I have migrated my application to Platform 7.2.1 I am getting the following exception where I don’t see any clue to fix. Thanks CUBA team for your help.
java.lang.IllegalStateException: DataGridItems is not active
at com.haulmont.cuba.web.gui.components.WebAbstractDataGrid.getDataGridItemsNN(WebAbstractDataGrid.java:847)
at com.haulmont.cuba.web.gui.components.WebAbstractDataGrid.getEntityDataGridItemsNN(WebAbstractDataGrid.java:858)
at com.haulmont.cuba.web.gui.components.WebAbstractDataGrid.getInitialVisibleColumns(WebAbstractDataGrid.java:1967)
at com.haulmont.cuba.web.gui.components.WebAbstractDataGrid.setItems(WebAbstractDataGrid.java:889)
at com.haulmont.cuba.gui.components.DataGrid.setDatasource(DataGrid.java:207)
at com.haulmont.cuba.gui.xml.layout.loaders.AbstractDataGridLoader.loadComponent(AbstractDataGridLoader.java:205)
at com.haulmont.cuba.gui.xml.layout.loaders.ContainerLoader.loadSubComponents(ContainerLoader.java:38)
at com.haulmont.cuba.gui.xml.layout.loaders.ContainerLoader.loadSubComponentsAndExpand(ContainerLoader.java:76)
at com.haulmont.cuba.gui.xml.layout.loaders.GroupBoxLayoutLoader.loadComponent(GroupBoxLayoutLoader.java:67)
at com.haulmont.cuba.gui.xml.layout.loaders.ContainerLoader.loadSubComponents(ContainerLoader.java:38)
at com.haulmont.cuba.gui.xml.layout.loaders.SplitPanelLoader.loadComponent(SplitPanelLoader.java:78)
at com.haulmont.cuba.gui.xml.layout.loaders.ContainerLoader.loadSubComponents(ContainerLoader.java:38)
at com.haulmont.cuba.gui.xml.layout.loaders.ContainerLoader.loadSubComponentsAndExpand(ContainerLoader.java:76)
at com.haulmont.cuba.gui.xml.layout.loaders.AbstractBoxLoader.loadComponent(AbstractBoxLoader.java:50)
at com.haulmont.cuba.gui.xml.layout.loaders.ContainerLoader.loadSubComponents(ContainerLoader.java:38)
at com.haulmont.cuba.gui.xml.layout.loaders.TabSheetLoader.loadComponent(TabSheetLoader.java:93)
at com.haulmont.cuba.gui.xml.layout.loaders.ContainerLoader.loadSubComponents(ContainerLoader.java:38)
at com.haulmont.cuba.gui.xml.layout.loaders.ScrollBoxLayoutLoader.loadComponent(ScrollBoxLayoutLoader.java:63)
at com.haulmont.cuba.gui.xml.layout.loaders.ContainerLoader.loadSubComponents(ContainerLoader.java:38)
at com.haulmont.cuba.gui.xml.layout.loaders.ContainerLoader.loadSubComponentsAndExpand(ContainerLoader.java:76)
at com.haulmont.cuba.gui.xml.layout.loaders.WindowLoader.loadComponent(WindowLoader.java:94)
at com.haulmont.cuba.web.sys.WebScreens.loadWindowFromXml(WebScreens.java:366)
at com.haulmont.cuba.web.sys.WebScreens.createScreen(WebScreens.java:233)
at com.haulmont.cuba.web.sys.WebScreens.openEditor(WebScreens.java:1202)
at com.haulmont.cuba.gui.components.HasWindowManager.openEditor(HasWindowManager.java:138)
at com.haulmont.cuba.gui.components.actions.CreateAction.internalOpenEditor(CreateAction.java:304)
at com.haulmont.cuba.gui.components.actions.CreateAction.actionPerform(CreateAction.java:257)
at com.haulmont.cuba.web.gui.components.WebButton.buttonClicked(WebButton.java:67)
at com.haulmont.cuba.web.widgets.CubaButton.fireClick(CubaButton.java:76)
at com.vaadin.ui.Button$1.click(Button.java:57)
at sun.reflect.GeneratedMethodAccessor359.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:153)
at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:115)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:431)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:396)
at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:260)
at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:82)
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40)
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1578)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:425)
at com.haulmont.cuba.web.sys.CubaApplicationServlet.serviceAppRequest(CubaApplicationServlet.java:329)
at com.haulmont.cuba.web.sys.CubaApplicationServlet.service(CubaApplicationServlet.java:215)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CompositeFilter$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)
I have exactly the same problem. The issue for me appears to be related to nested datasources. If you assign a nested collectiondatasource to the datagrid it throws this error. It was all working in 7.15 so appears to be related to some changes with 7.2 & 7.21.