old_contents: 
  from database import db
  
  
  class User(db.Model):
  
      id = db.Column(db.Integer, primary_key=True)
      email = db.Column(db.String(100), nullable=False, unique=True)
      hashed_password = db.Column(db.String(100), nullable=False)
      is_admin = db.Column(db.Boolean, nullable=False, default=False)
      authenticated = True
  
      def __init__(self, email, hashed_password=None, is_admin=False):
          self.email = email
          self.hashed_password = hashed_password
          self.is_admin = is_admin
  
      def to_dict(self):
          return {
              'id': self.id,
              'email': self.email,
              'hashed_password': self.hashed_password,
              'is_admin': self.is_admin
          }
  
      def is_active(self):
          return True
  
      def get_id(self):
          return self.email
  
      def is_authenticated(self):
          return self.authenticated
  
      def is_anonymous(self):
          return False
  
new_contents: 
  from database import db
  
  
  class User(db.Model):
  
      id = db.Column(db.Integer, primary_key=True)
      email = db.Column(db.String(100), nullable=False, unique=True)
      hashed_password = db.Column(db.String(100), nullable=False)
      is_admin = db.Column(db.Boolean, nullable=False, default=False)
      authenticated = True
  
      def __init__(self, email, hashed_password=None, is_admin=False):
          self.email = email
          self.hashed_password = hashed_password
          self.is_admin = is_admin
  
      def to_dict(self):
          return {
              'id': self.id,
              'email': self.email,
              'hashed_password': self.hashed_password,
              'is_admin': self.is_admin
          }
  
      def is_active(self):
          return True
  
      def get_id(self):
          return self.email
  
      @property
      def is_authenticated(self):
          return self.authenticated
  
      def is_anonymous(self):
          return False
  
subject: Fix the user class so it works with the newer version of flask-login.