NullReferenceException

I get this exact error when trying to join a server:
“Dissconnected: Exception: NullReferenceException: Object reference not set to an instance of an object”

I have tried:
-Opt out of all beta programs, flipping on and off, allow it to update
(I was able to play legacy)
-I have Uninstalled (Delete local content ‘in steam’) and reinstalled
-and Verified Integrity of game cache (in steam)

From what i understand NullReferenceException(NFE) means some content is missing or the wrong value.
Other threads I have heard people having this problem when hosting servers and using Oxide.
Many years ago i was hosting a Legacy server and using oxide, since it has been uninstalled but i think some third party app is still affecting rust in some way.

Suggestions, Ideas. Please Help!!! Haven’t been able to play for a couple weeks… many emotions