Error When Deploy

[pawlean (Pauline P. Narvas)]

Hi, @yuusukealmal! Welcome to the Vercel Community

Could you go through this post? Might be helpful!

Express 101: Everything about deploying your Express app on Vercel

We’ve released Zero-configuration Express backends - Vercel, which simplifies the whole workflow. To learn more, see Express on Vercel. Getting started Express.js is one of the most popular framework choices for building a backend using Node.js. If you are starting a new Express project and want to deploy it to Vercel, we recommend you to follow the Express on Vercel guide. Common patterns If you are coming from an existing project, we’ve put together this example repository to showcase th…