Lightroom Error Message

[AllNoAll]

I have been getting he below error message everytime I open lightroom on my 2019 16 inch MacBook Pro. How do I get rid of this error message. It feels like Lightroom is trying to sync photos that are not longer accessible. I always end up hitting on the postpone for a week option and then right back to it the next week.

[AllNoAll]

I hate to bump topics, but I'm still having this issue. Does anyone know how to resolve this?