[ovirt-users] ui error

Hi, in the UI error log ui.log i do get a lot of those errors: 2018-06-03 10:57:17,486+02 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-52) [] Permutation name: AEA766696E550914FBFDA5936BC98453 2018-06-03 10:57:17,486+02 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-52) [] Uncaught exception: com.google.gwt.core.client.JavaScriptException: (TypeError) : Cannot read property 'G' of null at org.ovirt.engine.ui.uicommonweb.models.storage.DisksAllocationModel.$lambda$1(DisksAllocationModel.java:107) at org.ovirt.engine.ui.uicommonweb.models.storage.DisksAllocationModel$lambda$1$Type.onSuccess(DisksAllocationModel.java:107) at org.ovirt.engine.ui.frontend.Frontend$1.$onSuccess(Frontend.java:227) [frontend.jar:] at org.ovirt.engine.ui.frontend.Frontend$1.onSuccess(Frontend.java:227) [frontend.jar:] at org.ovirt.engine.ui.frontend.communication.OperationProcessor$1.$onSuccess(OperationProcessor.java:133) [frontend.jar:] at org.ovirt.engine.ui.frontend.communication.OperationProcessor$1.onSuccess(OperationProcessor.java:133) [frontend.jar:] at org.ovirt.engine.ui.frontend.communication.GWTRPCCommunicationProvider$5$1.$onSuccess(GWTRPCCommunicationProvider.java:270) [frontend.jar:] at org.ovirt.engine.ui.frontend.communication.GWTRPCCommunicationProvider$5$1.onSuccess(GWTRPCCommunicationProvider.java:270) [frontend.jar:] at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:198) [gwt-servlet.jar:] at com.google.gwt.http.client.Request.$fireOnResponseReceived(Request.java:233) [gwt-servlet.jar:] at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:409) [gwt-servlet.jar:] at Unknown.eval(webadmin-0.js) at com.google.gwt.core.client.impl.Impl.apply(Impl.java:236) [gwt-servlet.jar:] at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:275) [gwt-servlet.jar:] at Unknown.eval(webadmin-0.js) This error also appears when tying to migrate a VM disk to another SD. Any idea why this happens? regards, Arsène --  Arsène Gschwind Fa. Sapify AG im Auftrag der Universität Basel IT Services Klingelbergstr. 70 | CH-4056 Basel | Switzerland Tel. +41 79 449 25 63 | http://its.unibas.ch <http://its.unibas.ch/> ITS-ServiceDesk: support-its@unibas.ch<mailto:support-its@unibas.ch> | +41 61 267 14 11