Hello, getting a strange issue that I have never seen before. I tried pulumi up'ing without having made any changes to my stack and got this error.

error: rpc error: code = Unknown desc = ["region"]: provider mismatch (kind:DELETE  inputDiff:true != kind:DELETE_REPLACE  inputDiff:true)

It seems to be from a provider resource that was automatically created by pulumi as delineated by the default naming. I am not sure how to go about fixing this as I do not manage this resource within my code and pulumi refresh does not do anything.

Looks like your AWS_REGION env var may have changed. Put it back to how it was, then make changes to eliminate any uses of the default provider.