I have a function from Next.js that sends an email using a liquid template.

Locally works, and on Digital Ocean (probably because on the way of the container is built)

  const emailsDirectory = path.resolve(process.cwd(), "src/pages/api/email/templates");

  const liquidEngine = new Liquid({
    root: [emailsDirectory],
    extname: ".liquid",
  });

  const emailFile = readFileSync(path.join(emailsDirectory, `${templateName}.liquid`), {
    encoding: "utf8",
  });

But on Vercel, is failing with the error Error: ENOENT: no such file or directory, open '/var/task/src/pages/api/email/templates/sign-in.liquid'"

I tried doing on the next.config.js

  experimental: {
    outputFileTracingIncludes: {
      "/api/email-template": ["./src/pages/api/email/templates/**"],
    },
  },

To read from /api/email-template but the output is not working as expected as it is not generating that folder.