requested http://localhost:3001/api/auth/sign-up: ERROR in [core: 96]: (sqlite3.OperationalError) no such table: user

teminal log
-desktop:~/Downloads/flask-starter/backend$ python manage.py runserver
* Serving Flask app "api" (lazy loading)
* Environment: production
WARNING: Do not use the development server in a production environment.
Use a production WSGI server instead.
* Debug mode: on
* Running on http://0.0.0.0:3001/ (Press CTRL+C to quit)
* Restarting with stat
* Debugger is active!
* Debugger PIN: 147-039-505
127.0.0.1 - - [30/Aug/2019 18:33:37] "OPTIONS /api/auth/sign-up HTTP/1.1" 200 -
2019-08-30 18:33:38,005 127.0.0.1: requested http://localhost:3001/api/auth/sign-up: ERROR in [core: 96]: (sqlite3.OperationalError) no such table: user
[SQL: SELECT user.id AS user_id, user.email AS user_email, user.password AS user_password, user.first_name AS user_first_name, user.last_name AS user_last_name, user.login AS user_login, user.age AS user_age, user.street AS user_street, user.city AS user_city, user.zip AS user_zip
FROM user
WHERE user.email = ?
LIMIT ? OFFSET ?]
[parameters: ('dhananjay@demo.com', 1, 0)]
(Background on this error at: http://sqlalche.me/e/e3q8)
127.0.0.1 - - [30/Aug/2019 18:33:38] "POST /api/auth/sign-up HTTP/1.1" 500 -