domains exception

[rocx1900]

sccm infra with 1 primary server , multiple domains
collection errors out with this message

Resolving domains triggered an exception.
System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
at System.Collections.Generic.Dictionary2.get_Item(TKey key) at SCCMHound.src.DomainsResolver..ctor(List1 users, List1 computers, List1 groups)
at SCCMHound.SCCMHound.invoke(String sccmServer, String sccmSiteCode, Boolean loop, T