Hello Team, I am getting “Unexpected Error " when I click on workspace. In error log below errors are getting.

2020-07-30 11:34:00,719 ERROR [nuxeo-error-log] javax.servlet.ServletException: org.nuxeo.ecm.core.storage.State cannot be cast to java.util.List

    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)
    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:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
    at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
    at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
    at org.nuxeo.elasticsearch.web.sync.UIThreadMarker.doFilter(UIThreadMarker.java:48)
    at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
    at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.nuxeo.ecm.core.management.jtajca.internal.Log4jWebFilter.doFilter(Log4jWebFilter.java:69)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilterInternal(NuxeoAuthenticationFilter.java:443)
    at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:51)
    at org.nuxeo.ecm.platform.ui.web.auth.oauth.NuxeoOAuthFilter.doFilter(NuxeoOAuthFilter.java:122)
    at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:49)
    at org.nuxeo.ecm.platform.oauth2.NuxeoOAuth2Filter.doFilter(NuxeoOAuth2Filter.java:79)
    at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:49)
    at org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilter(NuxeoAuthenticationFilter.java:412)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.nuxeo.ecm.platform.web.common.exceptionhandling.NuxeoExceptionFilter.doFilter(NuxeoExceptionFilter.java:67)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.nuxeo.ecm.platform.web.common.encoding.NuxeoEncodingFilter.doFilter(NuxeoEncodingFilter.java:75)
    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.ApplicationDispatcher.invoke(ApplicationDispatcher.java:728)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:467)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:392)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311)
    at org.nuxeo.ecm.platform.ui.web.rest.FancyURLFilter.doFilter(FancyURLFilter.java:112)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.nuxeo.ecm.platform.web.common.requestcontroller.filter.NuxeoRequestControllerFilter.doFilter(NuxeoRequestControllerFilter.java:146)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.nuxeo.ecm.webdav.service.WIRequestFilter.doFilter(WIRequestFilter.java:61)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilterInternal(NuxeoAuthenticationFilter.java:632)
    at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:51)
    at org.nuxeo.ecm.platform.ui.web.auth.oauth.NuxeoOAuthFilter.doFilter(NuxeoOAuthFilter.java:122)
    at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:49)
    at org.nuxeo.ecm.platform.oauth2.NuxeoOAuth2Filter.doFilter(NuxeoOAuth2Filter.java:79)
    at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:49)
    at org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilter(NuxeoAuthenticationFilter.java:412)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.nuxeo.ecm.platform.web.common.requestcontroller.filter.NuxeoCorsFilter.doFilter(NuxeoCorsFilter.java:51)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.nuxeo.ecm.platform.web.common.exceptionhandling.NuxeoExceptionFilter.doFilter(NuxeoExceptionFilter.java:67)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.nuxeo.ecm.platform.web.common.encoding.NuxeoEncodingFilter.doFilter(NuxeoEncodingFilter.java:75)
    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:199)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

Caused by: java.lang.ClassCastException: org.nuxeo.ecm.core.storage.State cannot be cast to java.util.List

    at org.nuxeo.ecm.core.storage.dbs.DBSSession.memToAcp(DBSSession.java:1398)
    at org.nuxeo.ecm.core.storage.dbs.DBSSession.getACP(DBSSession.java:1263)
    at org.nuxeo.ecm.core.storage.dbs.DBSSession.getMergedACP(DBSSession.java:1218)
    at org.nuxeo.ecm.core.security.SecurityService.checkPermission(SecurityService.java:142)
    at org.nuxeo.ecm.core.api.AbstractSession.hasPermission(AbstractSession.java:331)
    at org.nuxeo.ecm.core.api.AbstractSession.checkPermission(AbstractSession.java:214)
    at org.nuxeo.ecm.core.api.AbstractSession.getDataModel(AbstractSession.java:2015)
    at org.nuxeo.ecm.core.api.impl.DocumentModelImpl.loadDataModel(DocumentModelImpl.java:438)
    at org.nuxeo.ecm.core.api.impl.DocumentModelImpl.getDataModel(DocumentModelImpl.java:448)
    at org.nuxeo.ecm.core.api.impl.DocumentModelImpl.getPart(DocumentModelImpl.java:1211)
    at org.nuxeo.ecm.core.api.impl.DocumentModelImpl.getProperty(DocumentModelImpl.java:1259)
    at org.nuxeo.ecm.platform.el.DocumentModelResolver.getDocumentProperty(DocumentModelResolver.java:162)
    at org.nuxeo.ecm.platform.el.DocumentModelResolver.getValue(DocumentModelResolver.java:128)
    at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
    at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
    at org.jboss.el.parser.AstPropertySuffix.getValue(AstPropertySuffix.java:53)
    at org.jboss.el.parser.AstValue.getValue(AstValue.java:67)
    at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
    at org.jboss.el.parser.AstIdentifier.getValue(AstIdentifier.java:40)
    at org.jboss.el.parser.AstEmpty.getValue(AstEmpty.java:29)
    at org.jboss.el.parser.AstChoice.getValue(AstChoice.java:27)
    at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
    at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
    at org.jboss.el.parser.AstIdentifier.getValue(AstIdentifier.java:40)
    at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
    at com.sun.faces.facelets.el.ELText$ELTextVariable.toString(ELText.java:228)
    at com.sun.faces.facelets.compiler.AttributeInstruction.write(AttributeInstruction.java:89)
    at com.sun.faces.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:82)
    at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:302)
    at com.sun.faces.renderkit.html_basic.OutputLinkRenderer.encodeChildren(OutputLinkRenderer.java:124)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889)
    at org.nuxeo.ecm.platform.ui.web.component.document.RestDocumentLink.encodeChildren(RestDocumentLink.java:593)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1857)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860)
    at com.sun.faces.facelets.component.RepeatRenderer.encodeChildren(RepeatRenderer.java:104)
    at com.sun.faces.facelets.component.UIRepeat.process(UIRepeat.java:621)
    at com.sun.faces.facelets.component.UIRepeat.encodeChildren(UIRepeat.java:1110)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1857)
    at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1857)
    at org.richfaces.renderkit.RendererBase.renderChildren(RendererBase.java:282)
    at org.richfaces.renderkit.html.AjaxOutputPanelRenderer.doEncodeChildren(AjaxOutputPanelRenderer.java:57)
    at org.richfaces.renderkit.RendererBase.encodeChildren(RendererBase.java:158)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1857)
    at org.richfaces.renderkit.RendererBase.renderChildren(RendererBase.java:282)
    at org.richfaces.renderkit.html.AjaxOutputPanelRenderer.doEncodeChildren(AjaxOutputPanelRenderer.java:57)
    at org.richfaces.renderkit.RendererBase.encodeChildren(RendererBase.java:158)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1857)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860)
    at org.richfaces.renderkit.RendererBase.renderChildren(RendererBase.java:282)
    at org.richfaces.renderkit.html.AjaxOutputPanelRenderer.doEncodeChildren(AjaxOutputPanelRenderer.java:57)
    at org.richfaces.renderkit.RendererBase.encodeChildren(RendererBase.java:158)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1857)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1860)
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:461)
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133)
    at org.jboss.seam.jsf.SeamViewHandler.renderView(SeamViewHandler.java:188)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
    ... 81 more

2020-07-30 11:34:00,725 ERROR [nuxeo-error-log] Request Attributes:

javax.servlet.forward.request_uri : /bumblebee/nxpath/default/default-domain/workspaces/CMOG@view_documents javax.servlet.forward.context_path : /bumblebee javax.servlet.forward.servlet_path : /nxpath/default/default-domain/workspaces/CMOG@view_documents javax.servlet.forward.query_string : tabIds=MAIN_TABS%3Adocuments%2C%3A&conversationId=0NXMAIN1 javax.servlet.forward.mapping : org.apache.catalina.core.ApplicationMapping$MappingImpl@765ed84e org.jboss.seam.core.manager : Manager([0NXMAIN1]) contentViewService : org.nuxeo.ecm.platform.contentview.jsf.ContentViewServiceImpl@34bc8eed dndConfigHelper : org.nuxeo.ecm.webapp.dnd.DndConfigurationHelper@6c200ba2 currentDocumentTags : [] exception_message : org.nuxeo.ecm.core.storage.State cannot be cast to java.util.List actionManager : org.nuxeo.ecm.platform.actions.ActionService@6940791b notificationManager : org.nuxeo.ecm.platform.ec.notification.service.NotificationService@5b860819 relatedRoutes : [] org.jboss.seam.transaction.transaction : org.jboss.seam.transaction.Transaction@32a76e8e isInsidePersonalWorkspace : false resolveDocumentTags : [] select2Converter : org.nuxeo.ecm.platform.ui.select2.Select2Converter@6ecf049c org.jboss.seam.core.events : org.jboss.seam.core.Events@6e532da3 currentDocument : DocumentModelImpl(7805201e-2e9f-4a59-9b02-23c08fde45a2, path=/default-domain/workspaces/CMOG, title=CMOG) currentSuperSpace : DocumentModelImpl(7805201e-2e9f-4a59-9b02-23c08fde45a2, path=/default-domain/workspaces/CMOG, title=CMOG) adminMessageActivated : false typesMap : {Collaborative=[[Type {id: OrderedFolder}, Type {id: Collection}, Type {id: Folder}, Type {id: Workspace}], []], SimpleDocument=[[Type {id: Note}, Type {id: File}]]} tabsActionsList : [TAB_CONTENT, TAB_WORKSPACE_EDIT, TAB_PERMISSIONS, TAB_CONTENT_HISTORY, TAB_QUOTA] userManager : org.nuxeo.ecm.platform.computedgroups.UserManagerWithComputedGroups@f69e6a2 tagSelect2Support : org.nuxeo.ecm.platform.tag.web.TagSelect2Support@24256d0 org.jboss.seam.transaction.synchronizations : org.jboss.seam.transaction.SeSynchronizations@b188b08 nuxeoAliasBean : org.nuxeo.ecm.platform.ui.web.binding.alias.NuxeoAliasBean@1d658513 themeStylingService : org.nuxeo.theme.styling.service.ThemeStylingServiceImpl@3fe880e4 seamReload : org.nuxeo.ecm.webapp.seam.NuxeoSeamHotReloader@6a2c9d29 lockActions : org.nuxeo.ecm.webapp.edit.lock.LockActionsBean@7a48a26a contentViewRestActions : org.nuxeo.ecm.platform.contentview.seam.ContentViewRestActions@35c726e0 jsfPage : galaxy/default relatedRouteAction : org.nuxeo.ecm.platform.routing.web.RelatedRouteActionBean@43b6056 select2Actions : org.nuxeo.ecm.platform.ui.select2.Select2ActionsBean@a70702d org.jboss.seam.web.requestServletPath : /view_documents.faces currentServerLocation : org.nuxeo.ecm.platform.util.RepositoryLocation@5c13d641 securityError : false configurationService : org.nuxeo.runtime.services.config.ConfigurationServiceImpl@744a484f org.jboss.seam.faces.dateConverter : org.jboss.seam.faces.DateConverter@3514c8fb currentDomain : DocumentModelImpl(af0be570-8ac0-43f3-bd2f-47bb43820eb8, path=/default-domain, title=af0be570-8ac0-43f3-bd2f-47bb43820eb8) user_message : An unexpected error occurred. Click on the following links to get more information or go back to the application. currentQuotaDoc : org.nuxeo.ecm.quota.size.QuotaAwareDocument@3968089f org.jboss.seam.core.conversationPropagation : org.jboss.seam.core.ConversationPropagation@668ee634 messageBundle : java.util.PropertyResourceBundle@6fdcaf09 deleteActions : org.nuxeo.ecm.webapp.action.DeleteActionsBean@6f7613d0 requestedUrl : nxpath/default/default-domain/workspaces/CMOG@view_documents?tabIds=MAIN_TABS%3Adocuments%2C%3A&old_conversationId=0NXMAIN1 liveEditHelper : org.nuxeo.ecm.webapp.liveedit.LiveEditBootstrapHelper@7c364dd5 NuxeoExceptionHandlerMarker : true currentWorkspace : DocumentModelImpl(7805201e-2e9f-4a59-9b02-23c08fde45a2, path=/default-domain/workspaces/CMOG, title=7805201e-2e9f-4a59-9b02-23c08fde45a2) isUserWorkspace : false com.sun.faces.context.ExternalContextFactoryImpl_KEY : com.sun.faces.context.ExternalContextImpl@5638e3c nuxeoWebResourceDispatcher : org.nuxeo.ecm.webapp.resources.NuxeoWebResourceDispatcher@6649f598 restHelper : org.nuxeo.ecm.platform.ui.web.rest.RestHelper@144d67e2 nuxeo.force.url.encoding : true nuxeo.disable.redirect.wrapper : true nuxeoLayoutIdManager : org.nuxeo.ecm.platform.forms.layout.facelets.NuxeoLayoutIdManagerBean@4bfa1e28 org.jboss.seam.web.servletContexts : org.jboss.seam.web.ServletContexts@5ecaa67 repositoryManager : org.nuxeo.ecm.core.api.repository.RepositoryManagerImpl@4b57f702 org.jboss.seam.web.requestContextPath : /bumblebee nxDevModeSet : false DocumentView : DocumentViewImpl [documentLocation=DocumentLocationImpl [docIdRef=null, docPathRef=/default-domain/workspaces/CMOG, docRef=/default-domain/workspaces/CMOG, serverName=default], parameters={tabIds=MAIN_TABS:documents,:, conversationId=0NXMAIN1, tabId=null, subTabId=null, language=null, mainTabId=null}, patternName=default, subURI=null, tabId=null, viewId=view_documents] isNavigationBreadcrumb : true backendPath : [org.nuxeo.ecm.platform.ui.web.pathelements.DocumentPathElement@1c67d688, org.nuxeo.ecm.platform.ui.web.pathelements.DocumentPathElement@636ac091, org.nuxeo.ecm.platform.ui.web.pathelements.DocumentPathElement@78fa898a]