What is problem with Sqlalchemy query? I'm getting back a ArgumentError

Question

I want to get all users from type DbUser using sqlalchemy

   async def get_users(self, skip: int = 0, limit: int = 100):
        with Session(self.engine, future=True) as sess:
            return await sess.query(DbUser).offset(skip).limit(limit).all()

But I get the following error.

sqlalchemy.exc.ArgumentError: Column expression or FROM clause expected, got <class 'apiacces.database.DbModel.DbRole'>.