Django.core.exceptions.ValidationError: ['“” value has an invalid date format. It must be in YYYY-MM-DD format.'] problem

In 'models.py' i have this fields.

first_name = models.CharField(max_length=30, null=True)
last_name = models.CharField(max_length=30, null=True)
date_of_brith = models.DateField(default='YYYY-MM-DD', null=True)
email = models.EmailField(max_length=50, null=True)

When i try to migrate. I get this error. I tryed to delete also the field and I still have the same error

django.core.exceptions.ValidationError: ['“” value has an invalid date format. It must be in YYYY-MM-DD format.']

instead of this:

date_of_brith = models.DateField(default='YYYY-MM-DD', null=True)

Try this:

import datetime
date_of_brith = models.DateField(default=datetime.date.today)

Note: it will display today's date as default

Do migrations manually using below command:

python manage.py makemigrations appname

python manage.py sqlmigrate appname 0001 #Value like this will generate automatically after makemigrations

python manage.py migrate
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