To address the original question, I saw a similar error when overriding the save() function of a model. The solution was to include *args and **kwargs in the function definition:
def save(self,*args, **kwargs): # your custom code here # super(MyModel, self).save(*args, **kwargs) > -- You received this message because you are subscribed to the Google Groups "Django users" group. To view this discussion on the web visit https://groups.google.com/d/msg/django-users/-/vYCgvZ74BEQJ. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.