2019-01-18 09:55:55,951 ERROR nfo.magnolia.admincentral.AdmincentralErrorHandler: AdmincentralUI has encountered an unhandled exception. com.vaadin.server.ServerRpcManager$RpcInvocationException: Unable to invoke method click in com.vaadin.shared.ui.button.ButtonServerRpc at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:159) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:116) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:445) [vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:410) [vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:274) [vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:90) [vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40) [vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1601) [vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:445) [vaadin-server-8.5.2.jar:8.5.2] at info.magnolia.admincentral.AdmincentralServlet.service(AdmincentralServlet.java:113) [magnolia-admincentral-6.0.jar:?] at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) [servlet-api.jar:?] at info.magnolia.cms.filters.ServletDispatchingFilter.doFilter(ServletDispatchingFilter.java:148) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.virtualuri.VirtualUriFilter.doFilter(VirtualUriFilter.java:98) [magnolia-virtual-uri-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.module.cache.executor.Bypass.processCacheRequest(Bypass.java:58) [magnolia-cache-core-5.6.2.jar:?] at info.magnolia.module.cache.executor.CompositeExecutor.processCacheRequest(CompositeExecutor.java:67) [magnolia-cache-core-5.6.2.jar:?] at info.magnolia.module.cache.filter.CacheFilter.doFilter(CacheFilter.java:220) [magnolia-cache-core-5.6.2.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter(I18nContentSupportFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.RangeSupportFilter.doFilter(RangeSupportFilter.java:77) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:57) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.security.SecurityCallbackFilter.doFilter(SecurityCallbackFilter.java:84) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:94) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.module.site.filters.SiteMergeFilter.doFilter(SiteMergeFilter.java:119) [magnolia-site-1.2.2.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.multisite.filters.MultiSiteFilter.doFilter(MultiSiteFilter.java:120) [magnolia-module-multisite-1.3.5.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MultiChannelFilter.doFilter(MultiChannelFilter.java:83) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:73) [magnolia-cache-core-5.6.2.jar:?] at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:127) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.enterprise.registration.RegistrationFilter.doFilter(RegistrationFilter.java:64) [magnolia-module-enterprise-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.module.devicedetection.filter.DeviceDetectionFilter.doFilter(DeviceDetectionFilter.java:71) [magnolia-module-device-detection-1.1.jar:?] at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.personalization.preview.filter.PreviewFilter.doFilter(PreviewFilter.java:92) [magnolia-personalization-preview-app-1.7.jar:?] at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:155) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:128) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter(SafeDestroyMgnlFilterWrapper.java:107) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlFilterDispatcher.doDispatch(MgnlFilterDispatcher.java:67) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:110) [magnolia-core-6.0.jar:?] at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:96) [magnolia-core-6.0.jar:?] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.10] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.10] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) [catalina.jar:9.0.10] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [catalina.jar:9.0.10] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:491) [catalina.jar:9.0.10] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [catalina.jar:9.0.10] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [catalina.jar:9.0.10] at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) [catalina.jar:9.0.10] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [catalina.jar:9.0.10] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [catalina.jar:9.0.10] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-coyote.jar:9.0.10] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-coyote.jar:9.0.10] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) [tomcat-coyote.jar:9.0.10] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) [tomcat-coyote.jar:9.0.10] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-coyote.jar:9.0.10] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) [?:?] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) [?:?] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:9.0.10] at java.lang.Thread.run(Thread.java:844) [?:?] Caused by: java.lang.reflect.InvocationTargetException at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] at java.lang.reflect.Method.invoke(Method.java:564) ~[?:?] at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:155) ~[vaadin-server-8.5.2.jar:8.5.2] ... 111 more Caused by: com.vaadin.event.ListenerMethod$MethodException: Invocation of method buttonClick in info.magnolia.dam.external.app.field.factory.AssetLinkFieldFactory$$Lambda$948/1628682835 failed. at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:519) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:273) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:237) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1014) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.Button.fireClick(Button.java:384) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.Button$1.click(Button.java:57) ~[vaadin-server-8.5.2.jar:8.5.2] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] at java.lang.reflect.Method.invoke(Method.java:564) ~[?:?] at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:155) ~[vaadin-server-8.5.2.jar:8.5.2] ... 111 more Caused by: java.lang.ClassCastException: java.base/java.util.HashSet cannot be cast to info.magnolia.dam.api.ItemKey at info.magnolia.dam.external.app.contentview.AbstractAssetContainer.getItem(AbstractAssetContainer.java:161) ~[magnolia-dam-external-app-2.5.jar:?] at info.magnolia.dam.external.app.contentview.AbstractAssetContainer.containsId(AbstractAssetContainer.java:176) ~[magnolia-dam-external-app-2.5.jar:?] at com.vaadin.v7.ui.AbstractSelect.setValue(AbstractSelect.java:741) ~[vaadin-compatibility-server-8.5.2.jar:8.5.2] at com.vaadin.v7.ui.AbstractField.setValue(AbstractField.java:442) ~[vaadin-compatibility-server-8.5.2.jar:8.5.2] at com.vaadin.v7.ui.AbstractSelect.setValue(AbstractSelect.java:705) ~[vaadin-compatibility-server-8.5.2.jar:8.5.2] at info.magnolia.ui.workbench.list.ListViewImpl.select(ListViewImpl.java:253) ~[magnolia-ui-framework-compatibility-6.0.jar:?] at info.magnolia.ui.workbench.tree.TreeViewImpl.select(TreeViewImpl.java:98) ~[magnolia-ui-framework-compatibility-6.0.jar:?] at info.magnolia.ui.workbench.list.ListPresenter.select(ListPresenter.java:111) ~[magnolia-ui-framework-compatibility-6.0.jar:?] at info.magnolia.ui.workbench.WorkbenchPresenter.select(WorkbenchPresenter.java:252) ~[magnolia-ui-framework-compatibility-6.0.jar:?] at info.magnolia.ui.workbench.WorkbenchPresenter.select(WorkbenchPresenter.java:238) ~[magnolia-ui-framework-compatibility-6.0.jar:?] at info.magnolia.ui.contentapp.field.WorkbenchField.initContent(WorkbenchField.java:84) ~[magnolia-ui-framework-compatibility-6.0.jar:?] at com.vaadin.v7.ui.CustomField.getContent(CustomField.java:99) ~[vaadin-compatibility-server-8.5.2.jar:8.5.2] at com.vaadin.v7.ui.CustomField.attach(CustomField.java:89) ~[vaadin-compatibility-server-8.5.2.jar:8.5.2] at com.vaadin.server.AbstractClientConnector.attach(AbstractClientConnector.java:621) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.AbstractComponent.attach(AbstractComponent.java:600) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.AbstractClientConnector.attach(AbstractClientConnector.java:621) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.AbstractComponent.attach(AbstractComponent.java:600) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.AbstractClientConnector.attach(AbstractClientConnector.java:621) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.AbstractComponent.attach(AbstractComponent.java:600) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.AbstractClientConnector.attach(AbstractClientConnector.java:621) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.AbstractComponent.attach(AbstractComponent.java:600) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.AbstractClientConnector.attach(AbstractClientConnector.java:621) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.AbstractComponent.attach(AbstractComponent.java:600) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.AbstractComponent.setParent(AbstractComponent.java:521) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.Window.setParent(Window.java:182) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.UI.attachWindow(UI.java:593) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.UI.addWindow(UI.java:582) ~[vaadin-server-8.5.2.jar:8.5.2] at info.magnolia.admincentral.ResurfaceShell.openOverlay(ResurfaceShell.java:174) ~[magnolia-admincentral-6.0.jar:?] at info.magnolia.ui.api.context.UiContext.openOverlay(UiContext.java:59) ~[magnolia-ui-api-6.0.jar:?] at info.magnolia.ui.dialog.choosedialog.ChooseDialogPresenterImpl.start(ChooseDialogPresenterImpl.java:140) ~[magnolia-ui-framework-compatibility-6.0.jar:?] at info.magnolia.ui.contentapp.ContentApp.openChooseDialog(ContentApp.java:131) ~[magnolia-ui-framework-compatibility-6.0.jar:?] at info.magnolia.ui.contentapp.ContentApp.openChooseDialog(ContentApp.java:99) ~[magnolia-ui-framework-compatibility-6.0.jar:?] at info.magnolia.ui.framework.app.AppControllerImpl.openChooseDialog(AppControllerImpl.java:442) ~[magnolia-ui-framework-6.0.jar:?] at info.magnolia.ui.framework.app.AppControllerImpl.openChooseDialog(AppControllerImpl.java:431) ~[magnolia-ui-framework-6.0.jar:?] at info.magnolia.dam.external.app.field.factory.AssetLinkFieldFactory.lambda$createButtonClickListener$54792a69$1(AssetLinkFieldFactory.java:118) ~[magnolia-dam-external-app-2.5.jar:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] at java.lang.reflect.Method.invoke(Method.java:564) ~[?:?] at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:499) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:273) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:237) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1014) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.Button.fireClick(Button.java:384) ~[vaadin-server-8.5.2.jar:8.5.2] at com.vaadin.ui.Button$1.click(Button.java:57) ~[vaadin-server-8.5.2.jar:8.5.2] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] at java.lang.reflect.Method.invoke(Method.java:564) ~[?:?] at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:155) ~[vaadin-server-8.5.2.jar:8.5.2] ... 111 more