Flask ошибка при перенаправлении: TypeError: __init __ () принимает от 1 до 2 позиционных аргументов, но задано 3

Question

Я новичок ie в flask, и я изучаю его, следуя инструкциям на YouTube https://www.youtube.com/watch?v=CSHx6eCkmv0&t=36s. Если я запускаю следующий код и go в браузер, он работает хорошо, но ошибка возникает всякий раз, когда я хочу, чтобы веб-страница перенаправляла. Код выглядит следующим образом:

from flask import Flask, render_template, url_for, flash, redirect
from forms import RegistrationForm, LoginForm

app = Flask(__name__)

app.config['SECRET_KEY'] = '765bb2ad427608c76640cbec522eb8c2'

posts = [
    {
        'author': 'Takunda Mafuta',
        'title': 'Blog Post 1',
        'content': 'Content 1',
        'date_posted': '19 Jan 2020'
    },
    {
        'author': 'Thelma Mafuta',
        'title': 'Blog Post 2',
        'content': 'Content 2',
        'date_posted': '18 Jan 2020'
    }
]


@app.route('/')
@app.route('/home')
def home():
    return render_template('home.html', posts=posts)


@app.route('/about')
def about():
    return render_template('about.html', title='about')


@app.route("/register", methods=['GET', 'POST'])
def register():
    form = RegistrationForm()
    if form.validate_on_submit():
        flash(f'Account created for {form.username.data}!', 'success')
        return redirect(url_for('home'))
    return render_template('register.html', title='Register', form=form)


@app.route('/login')
def login():
    form = LoginForm()
    return render_template('login.html', title='Login', form=form)


if __name__ == '__main__':
    app.run(debug=True)

Ошибка следующая:

TypeError
TypeError: __init__() takes from 1 to 2 positional arguments but 3 were given

Traceback (most recent call last)
File "C:\Users\Takunda Mafuta\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 2463, in __call__
return self.wsgi_app(environ, start_response)
File "C:\Users\Takunda Mafuta\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 2449, in wsgi_app
response = self.handle_exception(e)
File "C:\Users\Takunda Mafuta\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 1866, in handle_exception
reraise(exc_type, exc_value, tb)
File "C:\Users\Takunda Mafuta\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\_compat.py", line 39, in reraise
raise value
File "C:\Users\Takunda Mafuta\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 2446, in wsgi_app
response = self.full_dispatch_request()
File "C:\Users\Takunda Mafuta\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 1951, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Users\Takunda Mafuta\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 1820, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "C:\Users\Takunda Mafuta\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\_compat.py", line 39, in reraise
raise value
File "C:\Users\Takunda Mafuta\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 1949, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Users\Takunda Mafuta\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 1935, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "C:\Users\Takunda Mafuta\Videos\lgT Personal Development\Data Science\Python\Tutorials\Flask Web Development\Flask-Demo\FlaskBlog\FlaskBlog.py", line 38, in register
if form.validate_on_submit():
File "C:\Users\Takunda Mafuta\AppData\Roaming\Python\Python38\site-packages\flask_wtf\form.py", line 101, in validate_on_submit
return self.is_submitted() and self.validate()
File "C:\Users\Takunda Mafuta\AppData\Roaming\Python\Python38\site-packages\wtforms\form.py", line 310, in validate
return super(Form, self).validate(extra)
File "C:\Users\Takunda Mafuta\AppData\Roaming\Python\Python38\site-packages\wtforms\form.py", line 152, in validate
if not field.validate(self, extra):
File "C:\Users\Takunda Mafuta\AppData\Roaming\Python\Python38\site-packages\wtforms\fields\core.py", line 206, in validate
stop_validation = self._run_validation_chain(form, chain)
File "C:\Users\Takunda Mafuta\AppData\Roaming\Python\Python38\site-packages\wtforms\fields\core.py", line 226, in _run_validation_chain
validator(form, self)
TypeError: __init__() takes from 1 to 2 positional arguments but 3 were given
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Регистрационный код формы:

1. Элемент списка

(A) forms.py

from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, SubmitField, BooleanField
from wtforms.validators import DataRequired, Length, Email, EqualTo


class RegistrationForm(FlaskForm):
    username = StringField('Username', validators=[DataRequired(), Length(min=2, max=20)])
    email = StringField('Email', validators=[DataRequired, Email()])
    password = PasswordField('Password', validators=[DataRequired()])
    confirm_password = PasswordField('Confirm Password', validators=[DataRequired(), EqualTo('password')])
    submit = SubmitField('Sign Up')


class LoginForm(FlaskForm):
    email = StringField('Email', validators=[DataRequired, Email()])
    password = PasswordField('Password', validators=[DataRequired()])
    remember = BooleanField('Remember Me')
    submit = SubmitField('Login')

(B) регистр. html

{% extends "layout.html" %}
{% block content %}
            <div class="content-section">
                <form method="POST" action="">
                    {{ form.hidden_tag() }}
                    <fieldset class="form-group">
                        <legend class="border-bottom mb-4">Join Today</legend>
                        <div class="form-group">
                            {{ form.username.label(class="form-control-label") }}
                            {{ form.username(class="form-control form-control-lg") }}
                        </div>
                        <div class="form-group">
                            {{ form.email.label(class="form-control-label") }}
                            {{ form.email(class="form-control form-control-lg") }}
                        </div>
                        <div class="form-group">
                            {{ form.password.label(class="form-control-label") }}
                            {{ form.password(class="form-control form-control-lg") }}
                        </div>
                        <div class="form-group">
                            {{ form.confirm_password.label(class="form-control-label") }}
                            {{ form.confirm_password(class="form-control form-control-lg") }}
                        </div>
                    </fieldset>
                    <div class="form-group">
                        {{ form.submit(class="btn btn-outline-info") }}
                    </div>
                </form>
            </div>
            <div class="border-top pt-3">
                <small class="text-muted">
                    Already Have An Account? <a class="ml-2" href="{{ url_for('login') }}">Sign In</a>
                </small>
            </div>
{% endblock content %}

Я не уверен, что это может быть источником ошибки: там Кажется, не вариант импорта перенаправления из flask, а из django .shortcuts и werkzeug.utils. Смотрите прикрепленное изображение. перенаправление импорта