How to fix the "This project is configured to use Yarn" error on pnpm install
Last updated on October 08, 2023
The "This project is configured to use Yarn" error happens in pnpm install when you have a field in your package.json file that specifies Yarn as the package manager.
The package.json field may have come about when you ran a yarn set version ... command, for example, yarn set version stable to set up Yarn Berry, or yarn set version berry to migrate from Yarn v1 to Yarn Berry.
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Fix "This project is configured to use Yarn" error
To fix the this pnpm install usage error, simply remove the "packageManager" field from package.json:
Once you do that, pnpm install will run properly.
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See also
- How to quickly fix the "Cannot read property 'then' of undefined" error in JavaScript
- How to Fix the "Unexpected strict mode reserved word 'yield'" Error in JavaScript
- How to easily fix the EAI_AGAIN error in NPM, Yarn, or PNPM
- How to quickly fix the ERR_OSSL_EVP_UNSUPPORTED error in Node.js
- How to easily fix the "Cannot read property 'classList' of null" error in JavaScript
- How to Fix the "Cannot access before initialization" Reference Error in JavaScript