Based on the detailed error message, it is possible to verify the error come from which MP?
The Windows Event Log Provider was unable to open the Microsoft-Windows-TaskScheduler/Operational event log on computer '<hostname>' for reading. The provider will retry opening the log every 30 seconds. Most recent error details: The system cannot find the file specified. One or more workflows were affected by this. Workflow name: MomUIGeneratedRuleafc86050fc76455eab425ce588c73c7e Instance name: <hostname> Instance ID: {A13CAC3C-A6EC-3BF5-CA2B-5AB24F8799B0} Management group: <management group>
The Windows Event Log Provider is still unable to open the Microsoft-Windows-TaskScheduler/Operational event log on computer '<hostname>'. The Provider has been unable to open the Microsoft-Windows-TaskScheduler/Operational event log for 720 seconds. Most recent error details: Access is denied. One or more workflows were affected by this. Workflow name: MomUIGeneratedRuleafc86050fc76455eab425ce588c73c7e Instance name: <hostname> Instance ID: {25B4AC38-00F1-6B4D-BDF0-0A08E167A048} Management group: <management group>