1 files changed, 3 insertions, 0 deletions
diff --git a/lib/api/helpers.rb b/lib/api/helpers.rb
index e1207e7e222..b7f21bd6c22 100644
--- a/lib/api/helpers.rb
+++ b/lib/api/helpers.rb
@@ -757,6 +757,9 @@ module API
         @initial_current_user = Gitlab::Auth::UniqueIpsLimiter.limit_user! { find_current_user! }
       rescue Gitlab::Auth::UnauthorizedError
         unauthorized!
+
+        # Explicitly return `nil`, otherwise an instance of `Rack::Response` is returned when reporting an error
+        nil
       end
     end
     # rubocop:enable Gitlab/ModuleWithInstanceVariables