Fix?

backend/src/index.js

@@ -17,6 +17,7 @@ if (process.env.NODE_ENV) {
 const app = express();
 const httpServer = createServer(app);
 const io = new Server(httpServer, {
+  path: '/api/socket.io',
   cors: {
     origin: true,
     credentials: true,
@@ -86,4 +87,4 @@ app.get("/api/status", (req, res) => {
 const PORT = process.env.PORT || 5000;
 httpServer.listen(PORT, () => {
   console.log("Server running on port 5000");
-});
+});