Hi Serge,

According to this - https://firebase.google.com/docs/reference/admin/python/firebase_admin.auth#invalididtokenerror - that error code usually means the id token is no longer valid and so, you need to re-authenticate in order to get a valid id token.

Without any further details or looking at how you implement it, all I can say is the above.

Did you follow the steps to obtain the Firebase ID Token in this tutorial - https://medium.com/better-programming/user-management-with-firebase-and-python-749a7a87b2b6?