1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/handlers/federation_event.py b/synapse/handlers/federation_event.py
index 243be46267..0645ce9392 100644
--- a/synapse/handlers/federation_event.py
+++ b/synapse/handlers/federation_event.py
@@ -894,6 +894,9 @@ class FederationEventHandler:
                 backfilled=backfilled,
             )
         except AuthError as e:
+            # FIXME richvdh 2021/10/07 I don't think this is reachable. Let's log it
+            #   for now
+            logger.exception("Unexpected AuthError from _check_event_auth")
             raise FederationError("ERROR", e.code, e.msg, affected=event.event_id)
 
         await self._run_push_actions_and_persist_event(event, context, backfilled)