improve backend error

index.js

@@ -29,10 +29,7 @@ const client = new Client({
 });
 
 backendsocket.on("connect_error", (err) => {
-  // the reason of the error, for example "xhr poll error"
-  console.log(err.message);
-  // some additional description, for example the status code of the initial HTTP response
-  console.log(err.description);
+  console.error(`Error connecting to backend: ${err.message}`);
 });
 
 if (!fs.existsSync('./temp')) fs.mkdirSync('./temp');