Every apis in the NextJS project is giving a 504 bad gateway time out error only in vercel production deployment, everithing works fine in local, so i added a hello GET api with the sample code

export default function handler(req, res) {
  res.status(200).json({ message: 'Hello from Next.js!' })
}

but this does fail too with 504

504: GATEWAY_TIMEOUT Code: FUNCTION_INVOCATION_TIMEOUT

this is the link https://glomium-dashboard.vercel.app/api/hello/

When i checked the vercel log the apis sometimes rarely works for once and then starts to fail with 504 again.

My code is located at src\pages\api in the root