[Django]-Django "Add a related_name argument to the definition" Error

The problem you are seeing is because of the ForeignKey and ManyToManyField fields in the BaseComment model. Because it is an abstract model, django does not create a table for it.

However, the derived models QuestionComment and AnswerComment which inherit the fields try to add the same fields defined by related_name (written_comments , voted_comments ) in the MyUser model. Because you can have only one field with the same name it gives you those errors.

A solution would be to not have BaseComment as an abstract model and let it have its own table/model.

Or, you could add these fields in derived models.

You can also try not specifying related_name and let django decide the names, but I’m not sure if this will work or not.