AuthAlreadyAssociated: This twitter account is already in use.

[modulitos]

To reproduce:

Open a private tab, and log in with your Twitter account.

Open another private tab, and log in again with that same Twitter account. You'll get a DRF error page w/ 500 response, and we will have this error on the server (listed below).

A simple solution would be to handle this error better on the server, and return a helpful message to the user. This is a problem when a user auths into multiple sites. I can think of only 2 ways to avoid this:

• Create a new Twitter app id for every new domain that we have
• Require the user to log out of one website before logging into another website.
• Automatically log the user of out the other website when they log into a new website. Not sure if this is possible, though.

[07/Nov/2017 17:49:56] "GET /api/v2/users/login/twitter/ HTTP/1.0" 302 0
ERROR 2017-11-07 17:50:02,342 django.request: Internal Server Error: /api/v2/users/complete/twitter/
Traceback (most recent call last):
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/django/core/handlers/base.py", line 111, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/django/views/decorators/cache.py", line 52, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 57, in wrapped_view
    return view_func(*args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/apps/django_app/utils.py", line 51, in wrapper
    return func(request, backend, *args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/apps/django_app/views.py", line 28, in complete
    redirect_name=REDIRECT_FIELD_NAME, *args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/actions.py", line 43, in do_complete
    user = backend.complete(user=user, *args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/backends/base.py", line 41, in complete
    return self.auth_complete(*args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/utils.py", line 229, in wrapper
    return func(*args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/backends/oauth.py", line 182, in auth_complete
    return self.do_auth(access_token, *args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/utils.py", line 229, in wrapper
    return func(*args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/backends/oauth.py", line 193, in do_auth
    return self.strategy.authenticate(*args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/strategies/django_strategy.py", line 96, in authenticate
    return authenticate(*args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/django/contrib/auth/__init__.py", line 60, in authenticate
    user = backend.authenticate(**credentials)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/backends/base.py", line 82, in authenticate
    return self.pipeline(pipeline, *args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/backends/base.py", line 85, in pipeline
    out = self.run_pipeline(pipeline, pipeline_index, *args, **kwargs)
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/backends/base.py", line 112, in run_pipeline
    result = func(*args, **out) or {}
  File "/home/me/.virtualenvs/mapseed-api/lib/python2.7/site-packages/social/pipeline/social_auth.py", line 24, in social_user
    raise AuthAlreadyAssociated(backend, msg)
AuthAlreadyAssociated: This twitter account is already in use.
[07/Nov/2017 17:50:02] "GET /api/v2/users/complete/twitter/?redirect_state=Xe0VHDAn7dVsDjeXjrOiF8SSlmYF3HoL&oauth_token=T2HiPwAAAAAAdmDaAAABX5eaWZg&oauth_verifier=oF0HSVk6T35wls98Lf9GdO9qJpBPZ1PF HTTP/1.0" 500 25599