AttributeError: 'NoneType' object has no attribute 'encode'

[RockaDev]

Traceback (most recent call last):
File "D:\python\Lib\site-packages\flask\app.py", line 2091, in call
return self.wsgi_app(environ, start_response)
File "D:\python\Lib\site-packages\flask\app.py", line 2076, in wsgi_app
response = self.handle_exception(e)
File "D:\python\Lib\site-packages\flask\app.py", line 2073, in wsgi_app
response = self.full_dispatch_request()
File "D:\python\Lib\site-packages\flask\app.py", line 1518, in full_dispatch_request
rv = self.handle_user_exception(e)
File "D:\python\Lib\site-packages\flask\app.py", line 1516, in full_dispatch_request
rv = self.dispatch_request()
File "D:\python\Lib\site-packages\flask\app.py", line 1502, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
File "C:\Users\mineo\Desktop\flask\website\auth.py", line 19, in login
if check_password_hash(user.password, password):
File "D:\python\Lib\site-packages\werkzeug\security.py", line 219, in check_password_hash
return hmac.compare_digest(_hash_internal(method, salt, password)[0], hashval)
File "D:\python\Lib\site-packages\werkzeug\security.py", line 148, in _hash_internal
password = password.encode("utf-8")
AttributeError: 'NoneType' object has no attribute 'encode'

Error should be in this line:

    user = User.query.filter_by(email=email).first()
    if user:
        if check_password_hash(user.password, password):

EDIT: Fixed by changing from

    password = request.form.get('password')
    #To:
    password = request.form.get('password1')