Error when trying to add a synonym to my taxonomy

I am trying to add a synonym in the taxonomy and when I save the document I get this error in the log:

] 04.03.2021 10:41:32 ERROR http-nio-8080-exec-10 [NavAppExceptionMapper.mapUnexpectedExceptions:34] Unexpected error occurred
[INFO] [talledLocalContainer] org.apache.wicket.WicketRuntimeException: An error occurred while getting the model object for Component: [TextField [Component id = widget, page = org.hippoecm.f
rontend.PluginPage, path = root:tabs:panel-container:cards:2:panel:center:tabs:panel-container:cards:0:panel:editor:extension.editor:form:template:container-holder:container:view:1:synonym:wid
get, type = org.apache.wicket.markup.html.form.TextField, isVisible = true, isVersioned = false]]
[INFO] [talledLocalContainer] at org.apache.wicket.Component.getDefaultModelObject(Component.java:1651) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.Component$3.compare(Component.java:304) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.Component.setDefaultModelObject(Component.java:3124) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.FormComponent.setModelObject(FormComponent.java:1579) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.FormComponent.updateModel(FormComponent.java:1097) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.Form$FormModelUpdateVisitor.component(Form.java:228) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.Form$FormModelUpdateVisitor.component(Form.java:198) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.util.visit.Visits.visitPostOrderHelper(Visits.java:274) ~[wicket-util-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.util.visit.Visits.visitPostOrderHelper(Visits.java:262) ~[wicket-util-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.util.visit.Visits.visitPostOrderHelper(Visits.java:262) ~[wicket-util-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.util.visit.Visits.visitPostOrderHelper(Visits.java:262) ~[wicket-util-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.util.visit.Visits.visitPostOrderHelper(Visits.java:262) ~[wicket-util-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.util.visit.Visits.visitPostOrder(Visits.java:245) ~[wicket-util-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.FormComponent.visitComponentsPostOrder(FormComponent.java:423) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.Form.internalUpdateFormComponentModels(Form.java:1873) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.Form.access$400(Form.java:148) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.Form$16.component(Form.java:1856) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.Form$16.component(Form.java:1850) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.util.visit.Visits.visitChildren(Visits.java:144) ~[wicket-util-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.util.visit.Visits.visitChildren(Visits.java:162) ~[wicket-util-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.util.visit.Visits.visitChildren(Visits.java:162) ~[wicket-util-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.util.visit.Visits.visitChildren(Visits.java:123) ~[wicket-util-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:969) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.Form.updateNestedFormComponentModels(Form.java:1849) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.Form.updateFormComponentModels(Form.java:1839) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.Form.process(Form.java:965) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.hippoecm.frontend.dialog.HippoForm.process(HippoForm.java:42) ~[hippo-cms-api-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:797) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior.onEvent(AjaxFormSubmitBehavior.java:174) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:155) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:601) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at sun.reflect.GeneratedMethodAccessor288.invoke(Unknown Source) ~[?:?]
[INFO] [talledLocalContainer] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51]
[INFO] [talledLocalContainer] at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51]
[INFO] [talledLocalContainer] at org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:258) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:241) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:248) ~[wicket-core-7.14.0.jar:7.14
.0]
[INFO] [talledLocalContainer] at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:234) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:895) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) ~[wicket-request-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:265) [wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:222) [wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:293) [wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:261) [wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:203) [wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:284) [wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.hippoecm.frontend.plugins.login.ConcurrentLoginFilter.doFilter(ConcurrentLoginFilter.java:42) [hippo-cms-login-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.FilterChainInvokingValve.invoke(FilterChainInvokingValve.java:72) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.HstSitePipeline$Invocation.invokeNext(HstSitePipeline.java:288) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.JCRSessionStatefulConcurrencyValve.invoke(JCRSessionStatefulConcurrencyValve.java:56) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.HstSitePipeline$Invocation.invokeNext(HstSitePipeline.java:288) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.SubjectBasedSessionValve.invoke(SubjectBasedSessionValve.java:58) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.HstSitePipeline$Invocation.invokeNext(HstSitePipeline.java:288) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.SecurityValve.invoke(SecurityValve.java:177) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.HstSitePipeline$Invocation.invokeNext(HstSitePipeline.java:288) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.LocalizationValve.invoke(LocalizationValve.java:101) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.HstSitePipeline$Invocation.invokeNext(HstSitePipeline.java:288) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.CmsSecurityValve.invoke(CmsSecurityValve.java:63) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.HstSitePipeline$Invocation.invokeNext(HstSitePipeline.java:288) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.InitializationValve.invoke(InitializationValve.java:40) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.HstSitePipeline$Invocation.invokeNext(HstSitePipeline.java:288) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.HstSitePipeline.invokeValves(HstSitePipeline.java:173) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.HstSitePipeline.invoke(HstSitePipeline.java:155) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.core.container.HstRequestProcessorImpl.processRequest(HstRequestProcessorImpl.java:81) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.container.HstDelegateeFilterBean.doFilter(HstDelegateeFilterBean.java:562) [hst-core-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.container.DelegatingFilter.doFilter(DelegatingFilter.java:68) [hst-commons-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.hippoecm.hst.container.HstFilter.doFilter(HstFilter.java:51) [hst-commons-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:688) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [catalina.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367) [tomcat-coyote.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-coyote.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-coyote.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639) [tomcat-coyote.jar:9.0.31]
[INFO] [talledLocalContainer] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-coyote.jar:9.0.31]
[INFO] [talledLocalContainer] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_51]
[INFO] [talledLocalContainer] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_51]
[INFO] [talledLocalContainer] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:9.0.31]
[INFO] [talledLocalContainer] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]
[INFO] [talledLocalContainer] Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
[INFO] [talledLocalContainer] at org.onehippo.taxonomy.plugin.TaxonomyEditorPlugin$8.getObject(TaxonomyEditorPlugin.java:433) ~[hippo-plugin-taxonomy-addon-frontend-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.onehippo.taxonomy.plugin.TaxonomyEditorPlugin$8.getObject(TaxonomyEditorPlugin.java:429) ~[hippo-plugin-taxonomy-addon-frontend-14.2.2.jar:14.2.2]
[INFO] [talledLocalContainer] at org.apache.wicket.Component.getDefaultModelObject(Component.java:1646) ~[wicket-core-7.14.0.jar:7.14.0]
[INFO] [talledLocalContainer] … 89 more
[INFO] [talledLocalContainer] 10:41:53 INFO autoexport is processing changes…
[INFO] [talledLocalContainer] 10:41:54 INFO autoexporting source: core/santanderbrxm/santanderbrxm/santanderbrxm-repository-data-application [content: taxonomies.yaml]
[INFO] [talledLocalContainer] 10:41:55 INFO autoexport update complete

That’s a UI error. Do you have multiple tabs open to the cms?

no, I only have one tab open