django.db.utils.IntegrityError: column “venue_city” contains null values

Question

I have read a lot of other posts here on stackoverflow and google but I could not find a solution.

It all started when I changed the model from a CharField to a For

Answer 1

I solved it by below:

1. First delete last migration that face problem
2. Then add like venue_city = models.CharField(blank=True, null=True)
3. Finally use makemigrations and migrate command