I am getting a page 404 with next.js with successful deployment

/** @type {import('next').NextConfig} */
const nextConfig = {
  reactStrictMode: true,
  output: 'standalone',
};

export default nextConfig;

/** @type {import('next').NextConfig} */
const nextConfig = {
  reactStrictMode: true,
  output: 'standalone',
};

export default nextConfig;