There is something wrong in the ui transforming a powered off machine to template, as suggested by the UI there is an exception recorded in ui.log: 2022-05-02 14:30:40,703Z ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-101) [] Permutation name: A3F26EED931694AB67137E0F77233AF3 2022-05-02 14:30:40,704Z ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-101) [] Uncaught exception: com.google.gwt.core.client.JavaScriptException: (TypeError) : Kgb(...) is undefined at org.ovirt.engine.ui.uicommonweb.builders.vm.HwOnlyCoreUnitToVmBaseBuilder.$postBuild(HwOnlyCoreUnitToVmBaseBuilder.java:24) at org.ovirt.engine.ui.uicommonweb.builders.vm.CoreUnitToVmBaseBuilder.postBuild(CoreUnitToVmBaseBuilder.java:33) at org.ovirt.engine.ui.uicommonweb.builders.vm.HwOnlyCoreUnitToVmBaseBuilder.postBuild(HwOnlyCoreUnitToVmBaseBuilder.java:24) at org.ovirt.engine.ui.uicommonweb.builders.CompositeBuilder$LastBuilder.build(CompositeBuilder.java:45) at org.ovirt.engine.ui.uicommonweb.builders.BaseSyncBuilder.build(BaseSyncBuilder.java:13) at org.ovirt.engine.ui.uicommonweb.builders.BaseSyncBuilder.build(BaseSyncBuilder.java:13) at org.ovirt.engine.ui.uicommonweb.builders.CompositeBuilder.build(CompositeBuilder.java:21) at org.ovirt.engine.ui.uicommonweb.builders.CompositeBuilder.build(CompositeBuilder.java:21) at org.ovirt.engine.ui.uicommonweb.builders.BuilderExecutor.$build(BuilderExecutor.java:61) at org.ovirt.engine.ui.uicommonweb.builders.BuilderExecutor.build(BuilderExecutor.java:28) at org.ovirt.engine.ui.uicommonweb.models.vms.VmListModel.$postNameUniqueCheck(VmListModel.java:1337) at org.ovirt.engine.ui.uicommonweb.models.vms.VmListModel.$lambda$14(VmListModel.java:1315) at org.ovirt.engine.ui.uicommonweb.models.vms.VmListModel$lambda$14$Type.onSuccess(VmListModel.java:1315) at org.ovirt.engine.ui.frontend.Frontend$1.$onSuccess(Frontend.java:239) at org.ovirt.engine.ui.frontend.Frontend$1.onSuccess(Frontend.java:239) 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$3$1.$onSuccess(GWTRPCCommunicationProvider.java:161) at org.ovirt.engine.ui.frontend.communication.GWTRPCCommunicationProvider$3$1.onSuccess(GWTRPCCommunicationProvider.java:161) at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:198) at com.google.gwt.http.client.Request.$fireOnResponseReceived(Request.java:233) at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:409) at Unknown.onreadystatechange<(https://ovirt-engine.ovirt/ovirt-engine/webadmin/?locale=it_IT line 9 > injectedScript) at com.google.gwt.core.client.impl.Impl.apply(Impl.java:306) at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:345)
It is not reproduced to me, I guess it requires a specific VM configuration.
This was fixed in ovirt-engine-4.5.0.8 so please upgrade as soon as practical
The issue occurred only when there were no other templates except for the Blank template. As a workaround, one can create any template using REST API and then the UI should work as expected.