Did you found it's solution ? , I am also currently stuck in this Problem , My Assets for Tailwind CSS url are not loading because of basePAth change.

/** @type {import('next').NextConfig} */
const nextConfig = {
  images: {
    remotePatterns: [
      {
        protocol: "https",
        hostname: "xyz.net",
      },
    ],
  },

  basePath: "/xperts",
};

export default nextConfig;