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-rw-r--r--synapse/handlers/message.py23
1 files changed, 16 insertions, 7 deletions
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index 2e024b551f..d4c2a6ab7a 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -1318,6 +1318,8 @@ class EventCreationHandler:
             # user is actually admin or not).
             is_admin_redaction = False
             if event.type == EventTypes.Redaction:
+                assert event.redacts is not None
+
                 original_event = await self.store.get_event(
                     event.redacts,
                     redact_behaviour=EventRedactBehaviour.AS_IS,
@@ -1413,6 +1415,8 @@ class EventCreationHandler:
                 )
 
         if event.type == EventTypes.Redaction:
+            assert event.redacts is not None
+
             original_event = await self.store.get_event(
                 event.redacts,
                 redact_behaviour=EventRedactBehaviour.AS_IS,
@@ -1500,11 +1504,13 @@ class EventCreationHandler:
                 next_batch_id = event.content.get(
                     EventContentFields.MSC2716_NEXT_BATCH_ID
                 )
-                conflicting_insertion_event_id = (
-                    await self.store.get_insertion_event_by_batch_id(
-                        event.room_id, next_batch_id
+                conflicting_insertion_event_id = None
+                if next_batch_id:
+                    conflicting_insertion_event_id = (
+                        await self.store.get_insertion_event_id_by_batch_id(
+                            event.room_id, next_batch_id
+                        )
                     )
-                )
                 if conflicting_insertion_event_id is not None:
                     # The current insertion event that we're processing is invalid
                     # because an insertion event already exists in the room with the
@@ -1537,13 +1543,16 @@ class EventCreationHandler:
             # If there's an expiry timestamp on the event, schedule its expiry.
             self._message_handler.maybe_schedule_expiry(event)
 
-        def _notify() -> None:
+        async def _notify() -> None:
             try:
-                self.notifier.on_new_room_event(
+                await self.notifier.on_new_room_event(
                     event, event_pos, max_stream_token, extra_users=extra_users
                 )
             except Exception:
-                logger.exception("Error notifying about new room event")
+                logger.exception(
+                    "Error notifying about new room event %s",
+                    event.event_id,
+                )
 
         run_in_background(_notify)