FlaskFM task 16

I am stuck with task 16. Anybody could help me?
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class User(db.Model):

id = db.Column(db.Integer, primary_key = True)

username = db.Column(db.String(50), index = True, unique = True)

playlist_id = db.Column(db.Integer, db.ForeignKey(‘playlist.id’))

def repr(self):

    return "{}".format(self.username)

@app.route(’/profiles’)

def profiles():

current_users = User.query.all()

return render_template('users.html', current_users = current_users)