DotNet agent failed to create with null value of domain (4352801)

There is null domain value when creating DotNet - transactions and performance counters Agent.

Following errors found in the DotNet agent logs:

YYYY-MM-DD HH:MIN ERROR [http-0.0.0.0-8080-39] com.quest.wcf.core.module.function.FunctionManager - Error executing script id=system:net_agentconfig.70 name="'addNewDomain' from the System module Application Servers/DotNet/Agent Config"
message: com.quest.nitro.service.sl.interfaces.scripting.ScriptingException: com.quest.nitro.service.sl.interfaces.scripting.ScriptAbortException: java.lang.NullPointerException:
Cannot invoke method contains() on null object
...
return null;
in view: 'system:net_agentconfig.61' in top-level view: 'system:custom_application_admin.1' for user: '123admin'
javax.script.ScriptException: com.quest.nitro.service.sl.interfaces.scripting.ScriptingException: com.quest.nitro.service.sl.interfaces.scripting.ScriptAbortException: java.lang.NullPointerException:
Cannot invoke method contains() on null object