[Django]-Django-allauth returns error "Reverse … with arguments '()' and keyword arguments '{}' not found"

Let me present this answer with some debugging tips that hopefully will prove useful in the future.

When you see that particular Django error, it almost always means that something is wrong with your urls.py. The odds that such a widely-used package has a bug affecting such basic usage is pretty remote, so digging into the source code was probably wasted effort in this case.

You said that you installed django-allauth “exactly as per tutorials”, but when I compare your setup to the documentation I see this difference:

Documentation: (r'^accounts/', include('allauth.urls'))

You: (r'^accounts/', include('allauth.urls', namespace='allauth'))

So it appears that something is wrong with your use of namespacing.

A quick Google search pulls up this issue, where the package author explains that namespacing isn’t supported.

So if you get rid of the namespace argument, everything should work as expected.