exception message: mimic v3 API

Gauvain Pocentek · Gauvain Pocentek · commit 05da7ba89a4b · 2017-09-19T23:15:45.000+02:00
diff --git a/gitlab/__init__.py b/gitlab/__init__.py
@@ -687,7 +687,7 @@ def sanitized_url(url):
 
         try:
             error_message = result.json()['message']
-        except Exception as e:
+        except (KeyError, ValueError, TypeError):
             error_message = result.content
 
         if result.status_code == 401:
