Handle missing events PL key when upgrading room

matrix-org · Dec 4, 2023 · 591ddb8 · 591ddb8
1 parent 8d998c8
commit 591ddb8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
@@ -549,7 +549,7 @@ async def clone_existing_room(
         except (TypeError, ValueError):
             ban = 50
         needed_power_level = max(
-            state_default_int, ban, max(event_power_levels.values())
+            state_default_int, ban, max(event_power_levels.values(), default=0)
         )
 
         # Get the user's current power level, this matches the logic in get_user_power_level,