Is this AttributeError caused by facebook settings or python-social-auth?

[yamashitadesu]

I could have logged in my application with facebook account, but after I added this following code, all of sudden, I was less able to log in with this Error.

SOCIAL_AUTH_FACEBOOK_PROFILE_EXTRA_PARAMS = {
    'fields': 'id,name,email', 
}

AttributeError at /complete/facebook/
'NoneType' object has no attribute 'provider'

I asked this in Stackoverflow, but I found here and thought here would be appropriate to ask.

Is this Error caused because of my codes or facebook settings?

python: 3.5.1, Django 1.9.2, python-social-auth: 0.2.14

settings.py

# -*- coding: utf-8 -*-

# SECURITY WARNING: don't run with debug turned on in production!
# when we develop in testcase
DEBUG = True
ALLOWED_HOSTS = []

# when we release our site
#DEBUG = False
#ALLOWED_HOSTS = ['*']


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'myapp',
    'debug_toolbar',
    'social.apps.django_app.default',
]

MIDDLEWARE_CLASSES = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.cache.UpdateCacheMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.cache.FetchFromCacheMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'social.apps.django_app.middleware.SocialAuthExceptionMiddleware',
]

ROOT_URLCONF = 'mysite.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR, 'templates'),],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.core.context_processors.debug',
                'django.core.context_processors.i18n',
                'django.core.context_processors.media',
                'django.core.context_processors.static',
                'django.core.context_processors.tz',
                'django.contrib.messages.context_processors.messages',
                'social.apps.django_app.context_processors.backends',
                'social.apps.django_app.context_processors.login_redirect',
            ],
        },
    },
]


# Password validation
# https://docs.djangoproject.com/en/1.9/ref/settings/#auth-password-validators

AUTH_USER_MODEL = 'myapp.User2'

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]

AUTHENTICATION_BACKENDS = (
    'social.backends.open_id.OpenIdAuth',
    'social.backends.twitter.TwitterOAuth',
    'social.backends.facebook.FacebookOAuth2',
    'social.backends.google.GoogleOAuth2',
    'django.contrib.auth.backends.ModelBackend',
)


SOCIAL_AUTH_URL_NAMESPACE = 'social'
SOCIAL_AUTH_LOGIN_REDIRECT_URL = '/home/'
SOCIAL_AUTH_LOGIN_ERROR_URL = '/login-error/'
SOCIAL_AUTH_LOGIN_URL = '/'
SOCIAL_AUTH_DISCONNECT_REDIRECT_URL = '/logout/'
# facebook
SOCIAL_AUTH_FACEBOOK_KEY = 'key'
SOCIAL_AUTH_FACEBOOK_SECRET = 'password'
SOCIAL_AUTH_FACEBOOK_SCOPE = ['email']
#SOCIAL_AUTH_FACEBOOK_PROFILE_EXTRA_PARAMS = {
#    'fields': 'id,name,email', 
#}

SOCIAL_AUTH_DISCONNECT_PIPELINE = (
    # Verifies that the social association can be disconnected from the current
    # user (ensure that the user login mechanism is not compromised by this
    # disconnection).
    'social.pipeline.disconnect.allowed_to_disconnect',

    # Collects the social associations to disconnect.
    'social.pipeline.disconnect.get_entries',

    # Revoke any access_token when possible.
    'social.pipeline.disconnect.revoke_tokens',

    # Removes the social associations.
    'social.pipeline.disconnect.disconnect',
)

[yamashitadesu]

I am sorry, I could solve this.
It was my fault.
After I deleted Database, it worked.