Fixed import issue.

Author: Indra512

frontend/config.js

@@ -0,0 +1,4 @@
+export const API_URL =
+  (typeof import.meta !== "undefined" && import.meta.env?.VITE_API_URL) ||
+  process.env.VITE_API_URL ||
+  "http://localhost:4000";

frontend/src/App.jsx

@@ -1,6 +1,6 @@
 import { useEffect, useState } from "react";
 
-const API_URL = import.meta.env.VITE_API_URL || "http://localhost:4000";;
+import { API_URL } from "./config";
 
 function App() {
   const [tasks, setTasks] = useState([]);