Fix Vercel monorepo Turbopack root

Author: devwebxyn

apps/frontend/next.config.ts

@@ -2,13 +2,13 @@ import { fileURLToPath } from "node:url";
 
 import type { NextConfig } from "next";
 
-const frontendRoot = fileURLToPath(new URL(".", import.meta.url));
+const workspaceRoot = fileURLToPath(new URL("../..", import.meta.url));
 
 const nextConfig: NextConfig = {
   reactStrictMode: true,
-  outputFileTracingRoot: frontendRoot,
+  outputFileTracingRoot: workspaceRoot,
   turbopack: {
-    root: frontendRoot,
+    root: workspaceRoot,
   },
 };