python - flask reports an error ValueError: invalid key 'nicknickname'

Question

Ask a question and record it by the way~ Because there are many files involved, I only post part of the code:
The following is the views file:

#coding=utf-8
from flask import render_template, flash, redirect, session, url_for, request, g
from flask_login import login_user, logout_user, current_user, login_required
from app import app, db, lm, oid
from .forms import LoginForm
from .models import User


@lm.user_loader
def load_user(id):
    return User.query.get(int(id))


@app.before_request
def before_request():
    g.user = current_user


@app.route('/')
@app.route('/index')
@login_required
def index():
    user = {'nickname': 'anryan'}
    posts = [
        {
            'author': {'nickname': 'Anryan'},
            'body': u'这地方不错~'
        },
        {
            'author': {'nickname': 'syy'},
            'body': u'晚上能扎营不'
        },
         {
            'author': {'nickname': u'小麦'},
            'body': u'空气很清爽哈~'
        },
         {
            'author': {'nickname': u'老崔'},
            'body': u'谁说不是，如果Tara能在这儿办场演唱会就好了'
        },
        {
            'author': {'nickname': u'二又'},
            'body': u'在这儿打LOL比赛肯定能赢'
        },
        {
            'author': {'nickname': u'言神'},
            'body': u'玩王者荣耀也不错。'
        }
    ]
    return render_template('index.html',
                           title='Home',
                           user=user,
                           posts=posts)


@app.route('/login', methods=['GET', 'POST'])
@oid.loginhandler
def login():
    if g.user is not None and g.user.is_authenticated:
        return redirect(url_for('index'))
    form = LoginForm()
    if form.validate_on_submit():
        session['remember_me'] = form.remember_me.data
        return oid.try_login(form.openid.data, ask_for=['nicknickname', 'email'])
    return render_template('login.html',
                           title=u'点击进入',
                           form=form,
                           providers=app.config['OPENID_PROVIDERS'])


@oid.after_login
def after_login(resp):
    if resp.email is None or resp.email == "":
        flash(u'无效登陆信息哦~请重新输入')
        return redirect(url_for('login'))
    user = User.query.filter_by(email=resp.email).first()
    if user is None:
        nicknickname = resp.nicknickname
        if nicknickname is None or nicknickname == "":
            nicknickname = resp.email.split('@')[0]
        user = User(nicknickname=nicknickname, email=resp.email)
        db.session.add(user)
        db.session.commit()
    remember_me = False
    if 'remember_me' in session:
        remember_me = session['remember_me']
        session.pop('remember_me', None)
    login_user(user, remember=remember_me)
    return redirect(request.args.get('next') or url_for('index'))


@app.route('/logout')
def logout():
    logout_user()
    return redirect(url_for('index'))

Display page:

Page error:

File "C:\Users\Asus\flask\blog\app\views.py", line 64, in login
Open an interactive python shell in this framereturn oid.try_login(form.openid.data, ask_for=['nicknickname', 'email'])
File "C:\Users\Asus\flask\lib\site-packages\flask_openid.py", line 554, in try_login
        approve the trust root).
        """
        if ask_for and __debug__:
            for key in ask_for:
                if key not in ALL_KEYS:
                    raise ValueError('invalid key %r' % key)
            if ask_for_optional:
                for key in ask_for_optional:
                    if key not in ALL_KEYS:
                        raise ValueError('invalid optional key %r' % key)
        try:
ValueError: invalid key 'nicknickname'
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Answer 1

Shouldn’t this be nickname?