datasource:
 workspace: events
 namespaces:
 mt: https://www.magnolia-travel.com/jcr/1.0/mt
 autoCreate: true
model:
 nodeType: event
 properties:
 - name: location
   required: true
 - name: descripion
   type: richText
 - name: imageLink
   label: Image
   required: true
   type: asset

2020-07-01 16:22:41,988 ERROR nfo.magnolia.admincentral.AdmincentralErrorHandler: AdmincentralUI has encountered an unhandled exception.2020-07-01 16:22:41,988 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-8.9.4.jar:8.9.4] at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:116) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:445) [vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:410) [vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:274) [vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:90) [vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40) [vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1602) [vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:448) [vaadin-server-8.9.4.jar:8.9.4] at info.magnolia.admincentral.AdmincentralServlet.service(AdmincentralServlet.java:119) [magnolia-admincentral-6.2.1.jar:?] at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) [servlet-api.jar:?] at info.magnolia.cms.filters.ServletDispatchingFilter.doFilter(ServletDispatchingFilter.java:148) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.virtualuri.VirtualUriFilter.doFilter(VirtualUriFilter.java:98) [magnolia-virtual-uri-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.module.cache.executor.Bypass.processCacheRequest(Bypass.java:58) [magnolia-cache-core-5.9.1.jar:?] at info.magnolia.module.cache.executor.CompositeExecutor.processCacheRequest(CompositeExecutor.java:66) [magnolia-cache-core-5.9.1.jar:?] at info.magnolia.module.cache.filter.CacheFilter.doFilter(CacheFilter.java:164) [magnolia-cache-core-5.9.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter(I18nContentSupportFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.RangeSupportFilter.doFilter(RangeSupportFilter.java:78) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:57) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.security.SecurityCallbackFilter.doFilter(SecurityCallbackFilter.java:84) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:94) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.module.site.filters.SiteMergeFilter.doFilter(SiteMergeFilter.java:119) [magnolia-site-1.3.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.multisite.filters.MultiSiteFilter.doFilter(MultiSiteFilter.java:120) [magnolia-module-multisite-2.1.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MultiChannelFilter.doFilter(MultiChannelFilter.java:83) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:74) [magnolia-cache-core-5.9.1.jar:?] at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:127) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.enterprise.registration.RegistrationFilter.doFilter(RegistrationFilter.java:79) [magnolia-module-enterprise-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.personalization.preview.filter.PreviewFilter.doFilter(PreviewFilter.java:92) [magnolia-personalization-preview-app-2.0.1.jar:?] at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:155) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:128) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter(SafeDestroyMgnlFilterWrapper.java:107) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlFilterDispatcher.doDispatch(MgnlFilterDispatcher.java:67) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:110) [magnolia-core-6.2.1.jar:?] at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:96) [magnolia-core-6.2.1.jar:?] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.77] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.77] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218) [catalina.jar:7.0.77] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110) [catalina.jar:7.0.77] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) [catalina.jar:7.0.77] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) [catalina.jar:7.0.77] at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962) [catalina.jar:7.0.77] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) [catalina.jar:7.0.77] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445) [catalina.jar:7.0.77] at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1115) [tomcat-coyote.jar:7.0.77] at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) [tomcat-coyote.jar:7.0.77] at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318) [tomcat-coyote.jar:7.0.77] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_112] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_112] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-coyote.jar:7.0.77] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_112]Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.GeneratedMethodAccessor542.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112] at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:155) ~[vaadin-server-8.9.4.jar:8.9.4] ... 106 moreCaused by: com.vaadin.event.ListenerMethod$MethodException: Invocation of method buttonClick in info.magnolia.ui.dialog.ActionButton$$Lambda$1308/1679326138 failed. at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:519) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:273) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:237) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1014) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.ui.Button.fireClick(Button.java:384) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.ui.Button$1.click(Button.java:57) ~[vaadin-server-8.9.4.jar:8.9.4] at sun.reflect.GeneratedMethodAccessor542.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112] at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:155) ~[vaadin-server-8.9.4.jar:8.9.4] ... 106 moreCaused by: java.lang.RuntimeException: info.magnolia.ui.api.action.ActionExecutionException: Action execution failed for action: commit at info.magnolia.ui.dialog.ActionExecution.execute(ActionExecution.java:75) ~[magnolia-ui-framework-6.2.1.jar:?] at info.magnolia.ui.dialog.ActionButton.lambda$new$d31ec881$1(ActionButton.java:62) ~[magnolia-ui-framework-6.2.1.jar:?] at sun.reflect.GeneratedMethodAccessor543.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112] at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:499) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:273) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:237) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1014) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.ui.Button.fireClick(Button.java:384) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.ui.Button$1.click(Button.java:57) ~[vaadin-server-8.9.4.jar:8.9.4] at sun.reflect.GeneratedMethodAccessor542.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112] at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:155) ~[vaadin-server-8.9.4.jar:8.9.4] ... 106 moreCaused by: info.magnolia.ui.api.action.ActionExecutionException: Action execution failed for action: commit at info.magnolia.ui.api.action.AbstractActionExecutor.execute(AbstractActionExecutor.java:64) ~[magnolia-ui-api-6.2.1.jar:?] at info.magnolia.ui.dialog.ActionExecution.execute(ActionExecution.java:73) ~[magnolia-ui-framework-6.2.1.jar:?] at info.magnolia.ui.dialog.ActionButton.lambda$new$d31ec881$1(ActionButton.java:62) ~[magnolia-ui-framework-6.2.1.jar:?] at sun.reflect.GeneratedMethodAccessor543.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112] at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:499) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:273) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:237) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1014) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.ui.Button.fireClick(Button.java:384) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.ui.Button$1.click(Button.java:57) ~[vaadin-server-8.9.4.jar:8.9.4] at sun.reflect.GeneratedMethodAccessor542.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112] at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:155) ~[vaadin-server-8.9.4.jar:8.9.4] ... 106 moreCaused by: java.lang.ClassCastException: info.magnolia.ui.datasource.jcr.JcrNodeWrapper cannot be cast to java.lang.String at info.magnolia.ui.editor.converter.JcrPathToIdentifierConverter.convertToModel(JcrPathToIdentifierConverter.java:54) ~[magnolia-ui-framework-jcr-6.2.1.jar:?] at com.vaadin.data.Converter$2.lambda$convertToModel$5daf174e$1(Converter.java:167) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.data.SimpleResult.flatMap(SimpleResult.java:66) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.data.ValidationResultWrap.flatMap(ValidationResultWrap.java:66) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.data.Converter$2.convertToModel(Converter.java:167) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.data.Converter$2.convertToModel(Converter.java:165) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.data.Binder$BindingImpl.doConversion(Binder.java:1109) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.data.Binder$BindingImpl.doValidation(Binder.java:1126) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.data.Binder$BindingImpl.access$1400(Binder.java:1001) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.data.Binder.lambda$validateBindings$11(Binder.java:2066) ~[vaadin-server-8.9.4.jar:8.9.4] at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_112] at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) ~[?:1.8.0_112] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[?:1.8.0_112] at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[?:1.8.0_112] at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[?:1.8.0_112] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_112] at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[?:1.8.0_112] at com.vaadin.data.Binder.validateBindings(Binder.java:2067) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.data.Binder.validate(Binder.java:2006) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.data.Binder.validate(Binder.java:1985) ~[vaadin-server-8.9.4.jar:8.9.4] at info.magnolia.ui.editor.FormPresenter.lambda$validateBoundProperties$6(FormPresenter.java:137) ~[magnolia-ui-framework-6.2.1.jar:?] at java.util.HashMap.forEach(HashMap.java:1288) ~[?:1.8.0_112] at info.magnolia.ui.editor.FormPresenter.validateBoundProperties(FormPresenter.java:135) ~[magnolia-ui-framework-6.2.1.jar:?] at info.magnolia.ui.editor.FormView.validate(FormView.java:172) ~[magnolia-ui-framework-6.2.1.jar:?] at info.magnolia.ui.contentapp.action.CommitAction.execute(CommitAction.java:78) ~[magnolia-ui-framework-6.2.1.jar:?] at info.magnolia.ui.api.action.AbstractActionExecutor.execute(AbstractActionExecutor.java:62) ~[magnolia-ui-api-6.2.1.jar:?] at info.magnolia.ui.dialog.ActionExecution.execute(ActionExecution.java:73) ~[magnolia-ui-framework-6.2.1.jar:?] at info.magnolia.ui.dialog.ActionButton.lambda$new$d31ec881$1(ActionButton.java:62) ~[magnolia-ui-framework-6.2.1.jar:?] at sun.reflect.GeneratedMethodAccessor543.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112] at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:499) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:273) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:237) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1014) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.ui.Button.fireClick(Button.java:384) ~[vaadin-server-8.9.4.jar:8.9.4] at com.vaadin.ui.Button$1.click(Button.java:57) ~[vaadin-server-8.9.4.jar:8.9.4] at sun.reflect.GeneratedMethodAccessor542.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112] at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:155) ~[vaadin-server-8.9.4.jar:8.9.4] ... 106 more