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Post-install for @prisma/photon fails

See original GitHub issue

When I run npm i @prisma/photon, I get

PS C:\Users\Me\Desktop\PROJECT\Prisma> npm i @prisma/photon                                                                                                                                  
> @prisma/photon@2.0.0-preview019 postinstall C:\Users\Me\Desktop\PROJECT\Prisma\node_modules\@prisma\photon
> node scripts/postinstall.js

(node:28580) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'stderr' of undefined
    at C:\Users\Me\Desktop\PROJECT\Prisma\node_modules\@prisma\photon\scripts\postinstall.js:63:11
    at processTicksAndRejections (internal/process/task_queues.js:97:5)
(node:28580) 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(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:28580) [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.
npm WARN prisma@1.0.0 No description
npm WARN prisma@1.0.0 No repository field.

+ @prisma/photon@2.0.0-preview019
updated 1 package and audited 1 package in 7.287s
found 0 vulnerabilities

This is on Windows 10, NodeJS 13.5.0, npm 6.13.4