404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=J_eO8xXia05sm2LmnA9XCZQKb8ZofnoQPTS1V9zRSp1ufcmq6SAM3oKDG-P0CKs3aT8tpR42i4G6vp05EAHqNyvl4IhL5pLZcH0OJA8H6RQ%2C was not found on this server. That’s all we know.