fix: 乐观缓存未捕获错误

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.14.322",
+  "version": "2.14.323",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and ShadowRocket.",
   "main": "src/main.js",
   "scripts": {

backend/src/utils/download.js

@@ -57,7 +57,11 @@ export default async function download(
                 timeout,
                 proxy,
                 true,
-            );
+            ).catch((e) => {
+                $.error(
+                    `乐观缓存: URL ${url} 更新缓存发生错误 ${e.message ?? e}`,
+                );
+            });
             return cached;
         }
     }