chore(oauth): show an informative log when OAuthError is raised

Co-authored-by: varun kumar <varun.kumar@zenatix.com>

allauth/socialaccount/providers/oauth/client.py

@@ -81,8 +81,11 @@ def _get_request_token(self):
             response = requests.post(url=rt_url, auth=oauth)
             if response.status_code not in [200, 201]:
                 raise OAuthError(
-                    _("Invalid response while obtaining request token" ' from "%s".')
-                    % get_token_prefix(self.request_token_url)
+                    _(
+                        "Invalid response while obtaining request token"
+                        ' from "%s". Response was: %s.'
+                    )
+                    % (get_token_prefix(self.request_token_url), response.text)
                 )
             self.request_token = dict(parse_qsl(response.text))
             self.request.session[

allauth/socialaccount/providers/oauth/views.py

@@ -1,5 +1,7 @@
 from __future__ import absolute_import
 
+import logging
+
 from django.urls import reverse
 
 from allauth.socialaccount.adapter import get_adapter
@@ -19,6 +21,9 @@
 )
 
 
+logger = logging.getLogger(__name__)
+
+
 class OAuthAdapter(object):
     def __init__(self, request):
         self.request = request
@@ -78,6 +83,7 @@ def login(self, request, *args, **kwargs):
         try:
             return client.get_redirect(auth_url, auth_params)
         except OAuthError as e:
+            logger.error("OAuth authentication error", exc_info=True)
             return render_authentication_error(
                 request, self.adapter.provider_id, exception=e
             )