How to fix Prisma Unique Type error when deploying to Vercel?

Question

I have the app working directly fine on my local dev env but when deploying to Vercel I got this type error which was not expected.

I'm using Nextjs, Prisma, tRPC.

any hints on what I might be missing?

Code

Vercel deploy log

Answer 1

There is two solutions:

1. Use a prisma @unique field (like id) to find your unique student:

const student = await prisma.student.findUnique({ where: { id: input.id } })

2. Try to find every students with that input.code and grab the first one:

const [student] = await prisma.student.findMany({ where: { code: input.code } })