Solving errors that occur when working with a python framework Flask…
TypeError: The view function did not return a valid response.
TypeError: The view function did not return a valid response. The function either returned None or ended without a return statement.
Return something in the running function.
AttributeError: ‘User’ object has no attribute ‘is_authenticated’
Error in flask-login. The User class should have UserMixin…
from flask_login import UserMixin
class User(db.Model, UserMixin):