Authorization Error Error 401: deleted_client The OAuth client was deleted

I am working on a nextjs project and using next auth for my authentication , i keep getting this error once i click on here . on the click of a button , i want it to redirect me to the sign up page , where i click my google accont . then it redirects me back to the page

Authorization Error
Error 401: deleted_client
The OAuth client was deleted.

i dont know what to do to solve it , i just want to sign my users in . I am also using firebase in conjuction with nextjs