After upgrading my engine to the 4.2 release I'm receiving an uncaught
exception error when I attempt to create a new cluster.

Uncaught exception occurred. Please try reloading the page. Details:
(TypeError) : Cannot read property 'b' of null
Please have your administrator check the UI logs

The UI logs show the following error:

2018-06-12 11:52:32,706-04 ERROR
[org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService]
(default task-23) [] Permutation name: AEA766696E550914FBFDA5936BC98453
2018-06-12 11:52:32,707-04 ERROR
[org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService]
(default task-23) [] Uncaught exception:
com.google.gwt.core.client.JavaScriptException: (TypeError) : Cannot
read property 'b' of null
        at
org.ovirt.engine.ui.uicommonweb.Linq$ServerCpuPredicate.$test(Linq.java:139)
        at
org.ovirt.engine.ui.uicommonweb.Linq$ServerCpuPredicate.test(Linq.java:139)
        at
java.util.stream.Stream$FilterSpliterator.$lambda$0(Stream.java:632)
[:1.8.0_171]
        at
java.util.stream.Stream$FilterSpliterator$lambda$0$Type.accept(Stream.java:632)
[:1.8.0_171]
        at
java.util.Spliterators$IteratorSpliterator.$tryAdvance(Spliterators.java:459)
[rt.jar:1.8.0_171]
        at
java.util.Spliterators$IteratorSpliterator.tryAdvance(Spliterators.java:459)
[rt.jar:1.8.0_171]
        at
java.util.stream.Stream$FilterSpliterator.tryAdvance(Stream.java:628)
[:1.8.0_171]
        at
java.util.stream.Stream$StreamSource.$findFirst(Stream.java:799)
[:1.8.0_171]
        at org.ovirt.engine.ui.uicommonweb.Linq.firstOrNull(Linq.java:75)
        at
org.ovirt.engine.ui.uicommonweb.models.clusters.ClusterModel.$populateCPUList(ClusterModel.java:1895)
        at
org.ovirt.engine.ui.uicommonweb.models.clusters.ClusterModel.$lambda$19(ClusterModel.java:1733)
        at
org.ovirt.engine.ui.uicommonweb.models.clusters.ClusterModel$lambda$19$Type.onSuccess(ClusterModel.java:1733)
        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)
       
Is there a way to resolve this or should I create a bug report?
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