From a16e6dab4decc831e706441e68c2e672d41a37f6 Mon Sep 17 00:00:00 2001
From: Michael Telatynski <7t3chguy@gmail.com>
Date: Fri, 12 Nov 2021 10:39:52 +0000
Subject: [PATCH] Guard around SpaceStore onAccountData handler prevEvent
 (#7123)

---
 src/stores/spaces/SpaceStore.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/stores/spaces/SpaceStore.ts b/src/stores/spaces/SpaceStore.ts
index 5cea148b78..83e6ae07ad 100644
--- a/src/stores/spaces/SpaceStore.ts
+++ b/src/stores/spaces/SpaceStore.ts
@@ -748,9 +748,9 @@ export class SpaceStoreClass extends AsyncStoreWithClient<IState> {
         }
     };
 
-    private onAccountData = (ev: MatrixEvent, lastEvent: MatrixEvent) => {
+    private onAccountData = (ev: MatrixEvent, prevEvent?: MatrixEvent) => {
         if (!this.allRoomsInHome && ev.getType() === EventType.Direct) {
-            const lastContent = lastEvent.getContent();
+            const lastContent = prevEvent?.getContent() ?? {};
             const content = ev.getContent();
 
             const diff = objectDiff<Record<string, string[]>>(lastContent, content);