Fix token auto create signal

apps/user/models.py

@@ -1,4 +1,6 @@
 from django.db import models
+from django.db.models.signals import post_save
+from django.dispatch import receiver
 from django.contrib.auth.models import AbstractUser, UserManager
 from django.contrib.postgres import fields as pgfields
 from django.utils.translation import gettext_lazy as _
@@ -59,6 +61,7 @@ class User(AbstractUser):
         user_data = dumps(user_data, ensure_ascii=False)
         return user_data
 
+
 @receiver(post_save, sender=User)
 def create_auth_token(sender, instance=None, created=False, **kwargs):
     if (