Set frontend folder as the root source for Turbopack

Author: LemonDrew

frontend/next.config.ts

@@ -2,6 +2,9 @@ import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
   /* config options here */
+  turbopack: {
+    root: __dirname,
+  },
 };
 
 export default nextConfig;