[FIXED] Django 4.0.2 | Python 3.9.7 | TypeError: __init__() missing 1 required positional argument: 'get_response'

Issue

I wrote a custom authentication and added a csrf check middleware in the authentication process. I am calling the below function in the authentication function.

def enforce_csrf(self, request):
    """
    Enforce CSRF validation
    """
    check = CSRFCheck()
    check.process_request(request)
    reason = check.process_view(request, None, (), {})
    if reason:
        # CSRF failed, bail with explicit error message
        raise PermissionDenied('CSRF Failed: %s' % reason)

The CSRFCheck() function is a custom middleware and it looks like this.

class CSRFCheck(CsrfViewMiddleware):
    def _reject(self, request, reason):
        return reason

Now when I am trying to process the request, which requires authentication, I am getting the error:
TypeError: init() missing 1 required positional argument: 'get_response'

the same code is working perfectly in Django 3.2

Now, as far as I was able to debug, the CSRFCheck function is expecting a get_response method which I don't know where it is coming from.

Solution

Downgrade the Django version to 3.2.X till the bug is fixed.

Answered By - Mahesh Gupta