When using the Administration Portal after a while I start to get errors like this: 'Uncaught exception occurred. Please try reloading the page. Details: (TypeError) : Cannot read property 'isEval' of undefined Please have your administrator check the UI logs' 'Uncaught exception occurred. Please try reloading the page. Details: (TypeError) : null is not an object (evaluating 'b.b.b.a') Please have your administrator check the UI logs' These errors appear when I use Brave, but also appear after a while in Firefox, Chrome or Safari. The count listed in the upper right corner continuously increases if I do nothing. I find these errors in the ui.log as well: For example: 2020-06-03 11:10:01,113+02 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-83) [] Uncaught exception: com.google.gwt.core.client.JavaScriptException: (TypeError) : null is not an object (evaluating 'b.b.b.a') at org.ovirt.engine.ui.webadmin.section.main.view.tab.gluster.SubTabVolumeGeneralView.$setMainSelectedItem(SubTabVolumeGeneralView.java:143) at org.ovirt.engine.ui.webadmin.section.main.view.tab.gluster.SubTabVolumeGeneralView.setMainSelectedItem(SubTabVolumeGeneralView.java:143) at org.ovirt.engine.ui.common.presenter.AbstractSubTabPresenter.$onDetailModelEntityChange(AbstractSubTabPresenter.java:368) at org.ovirt.engine.ui.common.presenter.AbstractSubTabPresenter.$lambda$6(AbstractSubTabPresenter.java:343) at org.ovirt.engine.ui.common.presenter.AbstractSubTabPresenter$lambda$6$Type.eventRaised(AbstractSubTabPresenter.java:343) at org.ovirt.engine.ui.uicompat.Event.$raise(Event.java:99) at org.ovirt.engine.ui.uicommonweb.models.EntityModel.$setEntity(EntityModel.java:36) at org.ovirt.engine.ui.uicommonweb.models.EntityModel.setEntity(EntityModel.java:36) at org.ovirt.engine.ui.uicommonweb.models.ListWithDetailsModel.$onSelectedItemChanged(ListWithDetailsModel.java:89) at org.ovirt.engine.ui.uicommonweb.models.volumes.VolumeListModel.onSelectedItemChanged(VolumeListModel.java:455) at org.ovirt.engine.ui.uicommonweb.models.SearchableListModel.$setItems(SearchableListModel.java:714) at org.ovirt.engine.ui.uicommonweb.models.SearchableListModel.setItems(SearchableListModel.java:714) at org.ovirt.engine.ui.uicommonweb.models.SearchableListModel$SetItemsAsyncQuery$1.$onSuccess(SearchableListModel.java:878) at org.ovirt.engine.ui.uicommonweb.models.SearchableListModel$SetItemsAsyncQuery$1.onSuccess(SearchableListModel.java:878) at org.ovirt.engine.ui.frontend.Frontend$1.$onSuccess(Frontend.java:227) at org.ovirt.engine.ui.frontend.Frontend$1.onSuccess(Frontend.java:227) at org.ovirt.engine.ui.frontend.communication.OperationProcessor$1.$onSuccess(OperationProcessor.java:133) at org.ovirt.engine.ui.frontend.communication.OperationProcessor$1.onSuccess(OperationProcessor.java:133) at org.ovirt.engine.ui.frontend.communication.GWTRPCCommunicationProvider$5$1.$onSuccess(GWTRPCCommunicationProvider.java:270) at org.ovirt.engine.ui.frontend.communication.GWTRPCCommunicationProvider$5$1.onSuccess(GWTRPCCommunicationProvider.java:270) at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:198) at com.google.gwt.http.client.Request.$fireOnResponseReceived(Request.java:233) at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:409) at Unknown.anonymous(https://ov.wl.kri.st/ovirt-engine/webadmin/?locale=en_US) at com.google.gwt.core.client.impl.Impl.apply(Impl.java:236) at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:275) at Unknown.anonymous(https://ov.wl.kri.st/ovirt-engine/webadmin/?locale=en_US) It is always org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService, and the errors run in the hundreds... What is going on? A bug? A misconfiguration? Database corruption? This is an ovirt 4.4 cluster I setup on Centos 8. The cluster uses gluster storage, and was setup only a few days ago.