Error when I try to open Dynamo

Dynamo Version
2.10.1.3976

Revit version
22.0.2.392
20210224_1515(x64)

When i try to open Dynamo from Revit it doesnt open and it shows this message

Hi @cv16066 ,

Welcome to the community!

Does this happen in every file or only in some particular files?

Hello @_Vijay and thank you!

I can neither open Dynamo nor open any Dynamo files

I have experienced the same situation before. i had to repair revit to get it working.