I deploy project to vercel by project can’t fetch data show error : GET http://localhost:3000/api/totalReserve net::ERR_BLOCKED_BY_CLIENT

But localhost is work can fetch data

I try to setup next.cofig.mjs to allow cors

/** @type {import('next').NextConfig} */
const nextConfig = {
  async headers() {
    return [
      {
        // matching all API routes
        source: "/api/:path*",
        headers: [
          { key: "Access-Control-Allow-Credentials", value: "true" },
          { key: "Access-Control-Allow-Origin", value: "*" },
          {
            key: "Access-Control-Allow-Methods",
            value: "GET,OPTIONS,PATCH,DELETE,POST,PUT",
          },
          {
            key: "Access-Control-Allow-Headers",
            value:
              "X-CSRF-Token, X-Requested-With, Accept, Accept-Version, Content-Length, Content-MD5, Content-Type, Date, X-Api-Version",
          },
        ],
      },
    ];
  },
  images: {
    domains: ["images.unsplash.com", "plus.unsplash.com"],
  },
};

export default nextConfig;

Advice me please

Try setup config core in file next.config.mjs , setup in file project.json on folder vercel