From 9708e394a042ba6ccf1f75ec869a3dfca1cd7f57 Mon Sep 17 00:00:00 2001
From: Bruno Windels <brunow@element.io>
Date: Thu, 5 Nov 2020 22:45:20 +0100
Subject: [PATCH] don't assume the thumbnail was cached already

---
 src/platform/web/service-worker.template.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/platform/web/service-worker.template.js b/src/platform/web/service-worker.template.js
index 689f6d00..bc894b90 100644
--- a/src/platform/web/service-worker.template.js
+++ b/src/platform/web/service-worker.template.js
@@ -140,7 +140,7 @@ async function readCache(request) {
         const mediaThumbnailCache = await caches.open(mediaThumbnailCacheName);
         response = await mediaThumbnailCache.match(request);
         // added in 0.1.26, remove previously cached error responses, remove this in some time
-        if (response.status >= 400) {
+        if (response?.status >= 400) {
             await mediaThumbnailCache.delete(request);
             response = null;
         }