The Diagnostic Server is showing "Alarm Action Failure."
For example:
Diagnostic Server - Alarm Action Failure
Action for alarm 'Action/b42cf995-5cad-4dcc-82b9-796862c9fbac/WriteToEventLogOperation/Read Error' failed to execute: Action '<Alarm actions name>' failed : Internal error; null pointer
Diagnostic Server - Alarm Action Failure
Action 'Action/{7EDDAAF2-A6E8-4307-9A94-2BCD507EDAA9}/EmailOperation/Not Configured' failed to execute: Action '<Alarm actions name' failed : Sending email failed : E-mail server details are not configured.