Issue with user_loader in login manager

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@login_manager.user_loader
def load_user(user_id):
    # return User.query.get(int(user_id))
    user = None
    print(f'{user_id=}')
    with Session.begin() as session:
        user = session.scalars(select(User).where(User.id == user_id)).first()  
        if user:
            print(f'{user=}')
            return User(email=user.email, )

user_id='None'

[Acutapugione]

I found the solution

[Acutapugione]

problem was in login_user(User(...), remember=remember)
cuz it was new User which not in session and it hasn't get_id