Unable to login to Claude Code - authentication_error

Question

⎿ API Error: 401
    {"type":"error","error":{"type":"authentication_error","message":"OAuth
     authentication is currently not supported."}}

I have tried all options I can find on the internet from:
rm -rf ~/.claude
rm ~/.claude.json

to reinstalling claude, or configuring ANTHROPIC_API_KEY in .env file, it just doesn't work.  I tried with another account but same problem.

So frustrating.  It was working fine, I just logged out and try to login again.