explainegy-nextjs/app/admin/categories/page.tsx

import React from "react";

export default function AdminCategoriesPage() {
  return (
    <div>
      <h1>Page to manage categories</h1>
      <a href="/admin/categories/editor/0">create new category</a> <br />
      <p>List of existing category</p>
    </div>
  );
}