Fix exceptions when attempting to backfill (#6576)

Fixes #6575

1 files changed, 4 insertions, 1 deletions

diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py

index abe02907b9..6fb453ce60 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -797,7 +797,10 @@ class FederationHandler(BaseHandler):
         events_to_state = {}
         for e_id in edges:
             state, auth = yield self._get_state_for_room(
-                destination=dest, room_id=room_id, event_id=e_id
+                destination=dest,
+                room_id=room_id,
+                event_id=e_id,
+                include_event_in_state=False,
             )
             auth_events.update({a.event_id: a for a in auth})
             auth_events.update({s.event_id: s for s in state})