Description of problem:
When navigating to Network->Networks - selecting an existing network name, -> click hosts no hosts are shown. When click unattached the following exception is thrown:

Uncaught exception occurred. Please try reloading the page. Details: (TypeError) : pab(...) is null
Please have your administrator check the UI logs

The UI log has the following:
2020-06-16 16:11:29,631-04 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-7) [] Permutation name: AF16749A44BF64270AED29D19220FF30
2020-06-16 16:11:29,634-04 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (default task-7) [] Uncaught exception: com.google.gwt.core.client.JavaScriptException: (TypeError) : pab(...) is null
        at org.ovirt.engine.ui.webadmin.section.main.view.tab.network.SubTabNetworkHostView$6.$getValue(SubTabNetworkHostView.java:125)
        at org.ovirt.engine.ui.webadmin.section.main.view.tab.network.SubTabNetworkHostView$6.getValue(SubTabNetworkHostView.java:125)
        at com.google.gwt.user.cellview.client.Column.render(Column.java:164) [gwt-servlet.jar:]
        at com.google.gwt.user.cellview.client.AbstractCellTableBuilder.$renderCell(AbstractCellTableBuilder.java:188) [gwt-servlet.jar:]
        at com.google.gwt.user.cellview.client.DefaultCellTableBuilder.$buildRowImpl(DefaultCellTableBuilder.java:62) [gwt-servlet.jar:]
        at com.google.gwt.user.cellview.client.AbstractCellTableBuilder.$buildRow(AbstractCellTableBuilder.java:85) [gwt-servlet.jar:]
        at com.google.gwt.user.cellview.client.AbstractCellTable.$buildRowValues(AbstractCellTable.java:2350) [gwt-servlet.jar:]
        at com.google.gwt.user.cellview.client.AbstractCellTable.replaceAllChildren(AbstractCellTable.java:2149) [gwt-servlet.jar:]
        at com.google.gwt.user.cellview.client.AbstractHasData$View.replaceAllChildren(AbstractHasData.java:265) [gwt-servlet.jar:]
        at com.google.gwt.user.cellview.client.HasDataPresenter.$resolvePendingState(HasDataPresenter.java:1062) [gwt-servlet.jar:]
        at com.google.gwt.user.cellview.client.HasDataPresenter$2.execute(HasDataPresenter.java:981) [gwt-servlet.jar:]
        at com.google.gwt.core.client.impl.SchedulerImpl.runScheduledTasks(SchedulerImpl.java:167) [gwt-servlet.jar:]
        at com.google.gwt.core.client.impl.SchedulerImpl.$flushFinallyCommands(SchedulerImpl.java:272) [gwt-servlet.jar:]
        at com.google.gwt.core.client.impl.Impl.exit(Impl.java:313) [gwt-servlet.jar:]
        at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:275) [gwt-servlet.jar:]
        at Unknown.Tu/<(https://rhev4m.example.com/ovirt-engine/webadmin/?locale=en_US line 9 > scriptElement)
        at Unknown.d(https://rhev4m.example.com/ovirt-engine/webadmin/?locale=en_US line 9 > scriptElement)
        at Unknown.anonymous(Unknown)

The network doesn't seem to work (will not allow VMs in the network to ping eachother). 

Version-Release number of selected component (if applicable):
# rpm -q ovirt-engine-webadmin-portal
ovirt-engine-webadmin-portal-4.3.10.4-0.1.el7.noarch


How reproducible:
All the time