WHAT IS DMD and how did it get on my Mac?

[Ola Fosheim Grøstad]

On Wednesday, 24 November 2021 at 09:25:16 UTC, Ola Fosheim 
Grøstad wrote:
> After an install these services may have to do cleanup. If this 
> problem persist, I suggest you take your iMac to a local Apple 
> service location.

Ask them to back up your data and do a clean install. I have done 
that in the past on my iMac to fix similar issues.