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while registering user

appwrite sdk version : 12.0.3
in dart
using cloud

suddenly stops working

try { final res = await AppwriteConfig.account.createOAuth2Session( provider: OAuthProvider.google, scopes: ['email', 'profile']);

this is the code for google auth

Are you using the dart SDK or the flutter SDK?

flutter sdk appwrite: ^12.0.3

Such scopes are really needed?
Try omitting them

ok

same error after removing them

At what point you're getting this error?

after redirecting to cloud.appwrite.io

before redirecting

Ok. Do you have set everything in the appwrite cloud console (enabled Google oauth and set it?)

yes

In the Google cloud platform, the URL set is the one specified in the popup that opens after clicking the google section in the creenshot you sent?