Fix ZIP download

src/routes/[slug]/[[timestamp]]/download/+server.ts

@@ -8,7 +8,7 @@ export const GET: RequestHandler = async ({ params, url }) => {
   try {
     const zipName = getZipName(params);
     const album = await getMetadata(zipName);
-    const allowDownload = album.allowDownload === false ? false : true;
+    const allowDownload = 'allowDownload' in album && album.allowDownload === false ? false : true;
     if (!allowDownload) {
       throw error(403, 'Forbidden');
     }