make manifest fix more future proof

src/main.ts

@@ -99,13 +99,16 @@ const startGame = async (manifest?: any) => {
   }
 };
 
+let manifest: any;
 fetch("/manifest.json")
   .then(res => res.json())
   .then(jsonResponse => {
-    startGame(jsonResponse.manifest);
-  }).catch(() => {
-    // Manifest not found (likely local build)
-    startGame();
+    manifest = jsonResponse.manifest;
+  }).catch(err => {
+    // Manifest not found (likely local build or error path on live)
+    console.log(`Manifest not found. ${err}`);
+  }).finally(() => {
+    startGame(manifest);
   });
 
 export default game;