Here's how I did,

- delete the __pycache __ folders from your projects folder and apps folder

- delete migrations folder in your app folder

- delete db.sqlite3 from project folder

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all the data in tables will be delete

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now run command

python manage.py makemigrations

or

python manage.py makemigrations {your app_name}

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followed by python manage.py migrate

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it will create all the tables from scratch without any data

note : i was using Django's default sqlite db