Unable to start server with yarn on branch main

[DuarteMRAlves]

Description

The start command fails when trying to run with yarn on branch main.

On the develop branch this does not happen.

Since this happens only on the main branch, there may be some version of the packages that is incompatible with these node and yarn versions.

On a previous version, the issue happened both on the develop and main branches.

Steps to Reproduce

The following commands were executed:

> yarn --dev
yarn install v1.22.17
[1/4] 🔍  Resolving packages...
[2/4] 🚚  Fetching packages...
[3/4] 🔗  Linking dependencies...
warning " > @testing-library/user-event@12.8.3" has unmet peer dependency "@testing-library/dom@>=7.21.4".
warning " > bootstrap@5.1.3" has unmet peer dependency "@popperjs/core@^2.10.2".
[4/4] 🔨  Building fresh packages...
✨  Done in 13.99s.

> yarn start
yarn run v1.22.17
$ react-scripts start
node:internal/modules/cjs/loader:488
      throw e;
      ^

Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './lib/tokenize' is not defined by "exports" in /Users/duartealves/IST/AI4EU/Drafter/node_modules/postcss-safe-parser/node_modules/postcss/package.json
    at new NodeError (node:internal/errors:371:5)
    at throwExportsNotFound (node:internal/modules/esm/resolve:416:9)
    at packageExportsResolve (node:internal/modules/esm/resolve:669:3)
    at resolveExports (node:internal/modules/cjs/loader:482:36)
    at Function.Module._findPath (node:internal/modules/cjs/loader:522:31)
    at Function.Module._resolveFilename (node:internal/modules/cjs/loader:919:27)
    at Function.Module._load (node:internal/modules/cjs/loader:778:27)
    at Module.require (node:internal/modules/cjs/loader:999:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (/Users/duartealves/IST/AI4EU/Drafter/node_modules/postcss-safe-parser/lib/safe-parser.js:1:17) {
  code: 'ERR_PACKAGE_PATH_NOT_EXPORTED'
}

Node.js v17.0.1
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Software versions:

The following noda and yarn versions are being used:

$ node --version
v17.0.1

$ yarn --version
1.22.17

[DuarteMRAlves]

Also, the yarn.lock file has the following differences:

Maybe the issues are in these package versions.

[ndrewtl]

I believe I fixed a package inconsistency, which is why the develop branch is working but main isn't. I'll merge develop into main when I complete the next set of features, which hopefully shouldn't be long

[DuarteMRAlves]

Okay then, yes I believe that will fix it. When you merge into main notify me and I will test it on my computer.

[ndrewtl]

@DuarteMRAlves just updated the branch main. Could you try and reproduce this bug again?

[DuarteMRAlves]

@ndrewtl I have tested it and it is working just fine 👍 . Feel free to close this issue.