From be5a8ca3b9c794de648626c06d636c7e674856ec Mon Sep 17 00:00:00 2001
From: Michael Telatynski <7t3chguy@gmail.com>
Date: Fri, 4 Nov 2022 16:40:02 +0000
Subject: [PATCH] Fix notif panel exception around accessing roomId of
 undefined (#9546)

---
 src/components/structures/TimelinePanel.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/components/structures/TimelinePanel.tsx b/src/components/structures/TimelinePanel.tsx
index fe7ecc8248..2592040f2a 100644
--- a/src/components/structures/TimelinePanel.tsx
+++ b/src/components/structures/TimelinePanel.tsx
@@ -798,7 +798,7 @@ class TimelinePanel extends React.Component<IProps, IState> {
         if (this.unmounted) return;
 
         // ignore events for other rooms
-        if (replacedEvent.getRoomId() !== this.props.timelineSet.room.roomId) return;
+        if (replacedEvent.getRoomId() !== this.props.timelineSet.room?.roomId) return;
 
         // we could skip an update if the event isn't in our timeline,
         // but that's probably an early optimisation.