Error: "An error occurred while attempting to load the Directory Analyzer tree" (4362789)

Expanding Active Directory Health and clicking Analyzer results in the following error:

"An error occurred while attempting to load the Directory Analyzer tree. One or more errors occurred. An item with the same key has already been added"

"at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value) at Dell.AA.ViewModels.DirectoryAnalyzer.DAViewModel.AddForestNode(String forestName, List`1 dcs, List`1 agents) at Dell.AA.ViewModels.DirectoryAnalyzer.DAViewModel.BuildDATree(List`1 dcs, List`1 agents) at Dell.AA.ViewModels.DirectoryAnalyzer.DAViewModel.b__6() at System.Threading.Tasks.Task.InnerInvoke() at System.Threading.Tasks.Task.Execute()"