update,

aastock/1/blog/app/not-found.tsx

@@ -0,0 +1,10 @@
+export default function NotFound() {
+  return (
+    <section>
+      <h1 className="mb-8 text-2xl font-semibold tracking-tighter">
+        404 - Page Not Found
+      </h1>
+      <p className="mb-4">The page you are looking for does not exist.</p>
+    </section>
+  )
+}