Changed version

package.json

 {
   "name": "web",
-  "version": "0.1.0",
+  "version": "2.0.0",
   "private": true,
   "dependencies": {
     "@emotion/react": "^11.5.0",

src/App.js

 import "react-toastify/dist/ReactToastify.css";
 
 const URL = "https://trampa-api-test.dilig.net/";
-export const socket = io(URL, { autoConnect: true, transports: ["websocket"] });
+export const socket = io(URL, { autoConnect: true });
 const App = () => {
   console.log(socket);