Why am I getting this unexpected arguments warning in python?

I am working on user authentication in Flask. I have my User class, which inherits from db.Model (SQLAlchemy) and UserMixins (flask-login):

class User(db.Model, UserMixin):
    id = db.Column(db.Integer, primary_key=True)
    email = db.Column(db.String(100), unique=True)
    password = db.Column(db.String(100))
    name = db.Column(db.String(1000))

and I create a new User object during registration:

        new_user = User(
            name=request.form["name"],
            password=generate_password_hash(password=request.form.get("password"),
                                            salt_length=8,
                                            method="pbkdf2:sha256"),
            email=request.form["email"])

Since I inherited from UserMixins, I started to get an "unexpected arguments" warning from pycharm when I create new_user. can someone explain to me why that is? If I don't inherit from UserMixins, the warning goes away.