prisma: [Windows] "Photon binary for current platform windows could not be found" while running "npm run seed"

Run prisma2 init
Choose template TypeScript > GraphQL + Auth > SQLite
Run npm run seed

Result:

(node:7708) UnhandledPromiseRejectionWarning: Error: Photon binary for current platform windows could not be found.
  Make sure to adjust the generator configuration in the schema.prisma file:
generator photon {
  provider  = "photonjs"
  platforms = ["native", "windows"]
}
  Please run prisma2 generate for your changes to take effect.
  Note, that by providing `native`, Photon automatically resolves `windows`.
  Read more about deploying Photon: https://github.com/prisma/prisma2/blob/master/docs/core/generators/photonjs.md
    at NodeEngine.getPrismaPath (C:\Users\user\projects\playground\hello-prisma\node_modules\@generated\photon\runtime\index.js:3771:23)
(node:7708) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:7708) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Tried to manually run prisma2 generate and then npm run seed. To no avail.

Prisma version: 2.0.0-preview-11 OS: Windows 10 Pro (x64) Node version: 10.16.2 NPM version: 6.9.0

About this issue

Original URL
State: closed
Created 5 years ago
Comments: 25 (10 by maintainers)

Most upvoted comments

@seed-of-apricot of course. In node_modules@generated\photon\runtime\index.js, search for the declaration for alternativePath (its in the getPrismaPath function at about line nbr 3770) and set its value to const alternativePath = 'C:\\Users\\serotonyn\\project\\node_modules\\@generated\\photon\\runtime\\query-engine-windows.exe'

serotonyn on Sep 15, 2019

This now works fine with preview-13.

Please let us know if this is not true for you, and we can reopen this issue and investigate further.

janpio on Sep 27, 2019

We currently think this might already be fixed by a pending change, will test and let you know when the change is available in alpha for confirmation.

janpio on Sep 25, 2019

Short investigation into this:

The original error message

(node:7708) UnhandledPromiseRejectionWarning: Error: Photon binary for current platform windows could not be found.

indeed comes from it not being able to get an alternativePath: https://github.com/prisma/photonjs/blob/36d275c42ad36bd20619d4e47b605cb0306c06d7/packages/engine-core/src/NodeEngine.ts#L210-L217

We missed to adapt the resolveAlternativeBinaryPath method for Windows to add the necessary .exe: https://github.com/prisma/photonjs/blob/36d275c42ad36bd20619d4e47b605cb0306c06d7/packages/engine-core/src/NodeEngine.ts#L170-L180

But we probably also missed resolvePrismaPath https://github.com/prisma/photonjs/blob/36d275c42ad36bd20619d4e47b605cb0306c06d7/packages/engine-core/src/NodeEngine.ts#L147-L165 which would lead to this not even being triggered.

Do you agree @divyenduz? Should be simple enough to fix in a quick PR from me.

(We should probably double check all mentions of query-engine- in the codebase for this)

janpio on Sep 16, 2019

@serotonyn That worked, thank you!

seed-of-apricot on Sep 15, 2019

@serotonyn Could you please tell me how to set the alternative path?

seed-of-apricot on Sep 15, 2019