Handle *args and **kwargs on view

We are setting this view as handler404 on tests,
this view expects an extra arg (exception)

https://docs.djangoproject.com/en/2.2/ref/views/#the-404-page-not-found-view

(not sure why it worked before)

Author: stsewd

readthedocs/proxito/views/serve.py

@@ -151,7 +151,7 @@ class ServeDocs(SettingsOverrideObject):
 
 class ServeError404Base(ServeRedirectMixin, ServeDocsMixin, View):
 
-    def get(self, request, proxito_path, template_name='404.html'):
+    def get(self, request, proxito_path, *args, template_name='404.html', **kwargs):
         """
         Handler for 404 pages on subdomains.