git init

app/dashboard/invoices/[id]/edit/not-found.tsx

@@ -0,0 +1,18 @@
+import Link from 'next/link';
+import { FaceFrownIcon } from '@heroicons/react/24/outline';
+
+export default function NotFound() {
+    return (
+        <main className="flex h-full flex-col items-center justify-center gap-2">
+            <FaceFrownIcon className="w-10 text-gray-400" />
+            <h2 className="text-xl font-semibold">404 Not Found</h2>
+            <p>Could not find the requested invoice.</p>
+            <Link
+                href="/dashboard/invoices"
+                className="mt-4 rounded-md bg-blue-500 px-4 py-2 text-sm text-white transition-colors hover:bg-blue-400"
+            >
+                Go Back
+            </Link>
+        </main>
+    );
+}