This page origin: loading...
⚠️ You opened via file:// — login only works over http(s). Use localhost or your pages.dev link.
Cloud Console → Credentials → your OAuth client → Authorized JavaScript origins → Add:
1) https://revesionforsstbyabel.pages.dev (no trailing slash)
2) http://localhost:8000 for testing
Save → wait 5 mins → hard refresh (Ctrl+Shift+R) → retry. Error 400 origin_mismatch = origin missing there.