"detail": "Method \"GET\" not allowed." in TokenAuthentication Django rest framework

I am trying to build a token-based authentication system by following https://www.django-rest-framework.org/api-guide/authentication/.

But on sending a request, I am getting an error msg as a response:

{ "detail": "Method "GET" not allowed." }

Here is what I have tried so far:

urls.py

urlpatterns = [
    path('api-token-auth/', views.obtain_auth_token),
]

models.py

@receiver(post_save, sender=settings.AUTH_USER_MODEL)
def create_auth_token(sender, instance=None, created=False, **kwargs):
    if created:
        Token.objects.create(user=instance)

views.py

def index(request):

    return render(request,'index.html')

Any help would be beneficial.