Hey guys, I've been struggling for a few days now. I am deploying a function to an AWS lambda, which uses the Prisma Client. I have been using the version 2 for quite some time and am trying to update to version 4, but even after updating all packages and generating DB, I'm always getting the @prisma/client did not initialize yet error. Any idea why this could be?

Hi @Dávid Korečko 👋 Have you looked at this resource

Yep, already doing all those things, except I got to one of the points. It seems that in the generated node_modules/.prisma/client folder I am missing the engine files. Maybe that could be the issue?

Give it a try and let me know if it works for you.

I manually dragged the engine files there, but to no avail, still receiving the same error. Any other ideas?

Did you try deleting Prisma engines that are not required?

Actually scratch that, the prisma folder does not get deployed to be precise, just the .prisma and @prisma ones

This looks good but i can't say what is wrong at the moment. Did you also get a chance to look at the deployment guide to aws lambda

I've gone through that already since I fee llike I've read every possible form of documentation related to this error or using Prisma with AWS 😄 What confuses me is that the older version (version 2) worked perfectly fine, the only thing that's changed is the Prisma and Prisma client version in package.json and package-lock.json to version 4. Even on this new version, it works locally, works for integration tests, just not the lambda. Is there nothing that has changed between those versions?

Can you add this script to your package.json file?

"postinstall": "prisma generate"

Which package.json should this be in? The one in packages or the one for the entire repository?

The one for the entire repository

No difference. Also, I've narrowed it down to being upgraded from version 2 to version 3 as being the issue.

Can you share a minimal repository where i can try to reproduce this error on deploy to AWS lamdba?

Sadly I don't think I can since this is a work project, so can't share parts, but also don't know enough about AWS and CI/CD to recreate a minimal version of the project, apologies

You're welcome