diff --git a/web/apps/photos/src/services/download/index.ts b/web/apps/photos/src/services/download/index.ts
index 37eeac440..70934dac0 100644
--- a/web/apps/photos/src/services/download/index.ts
+++ b/web/apps/photos/src/services/download/index.ts
@@ -150,7 +150,7 @@ class DownloadManagerImpl {
         this.ensureInitialized();
 
         const key = file.id.toString();
-        const cached = await this.thumbnailCache.get(key);
+        const cached = await this.thumbnailCache?.get(key);
         if (cached) return new Uint8Array(await cached.arrayBuffer());
         if (localOnly) return null;