v6 causes: Error: Path Validation Error: Path(s) specified in the action for caching do(es) not exist, hence no cache is being saved.

[Jason3S]

After upgrading from v5 to v6, workflows started failing due to caching issues. Rolling back to v5 fixes the issue.

Note: The version of pnpm is stored in package.json:

  "packageManager": "pnpm@10.29.2+sha512.bef43fa759d91fd2da4b319a5a0d13ef7a45bb985a3d7342058470f9d2051a3ba8674e629672654686ef9443ad13a82da2beb9eeb3e0221c87b8154fff9d74b8",

[DamdamChoiSE]

I’m experiencing a similar issue as well.

GitHub Actions workflow:

    steps:
      - name: Checkout
        uses: actions/checkout@v6

      - name: Install node
        uses: actions/setup-node@v6
        with:
          node-version: 24

      - name: Install pnpm
        uses: pnpm/action-setup@v6
        with:
          version: 10    # pnpm version v10
          cache: true

Error message:

Run pnpm/action-setup@v5
Running self-installer...
Installation Completed!
Restoring cache...
  /home/**************/setup-pnpm/node_modules/.bin/pnpm store path --silent
  /home/**************/setup-pnpm/node_modules/.bin/store/v10
  Error: Some specified paths were not resolved, unable to cache dependencies.
      at runRestoreCache (/home/**************/actions-runner/_work/_actions/pnpm/action-setup/v5/dist/index.js:1:917)
      at async restoreCache (/home/**************/actions-runner/_work/_actions/pnpm/action-setup/v5/dist/index.js:1:387)
      at async runMain (/home/**************/actions-runner/_work/_actions/pnpm/action-setup/v5/dist/index.js:1:2882)
      at async main (/home/**************/actions-runner/_work/_actions/pnpm/action-setup/v5/dist/index.js:1:2726)

On GitHub Actions runner (self-hosted):

**********:~/setup-pnpm/node_modules/.bin/store$ ls -al
total 12
drwxr-xr-x 3 ************** ************** 4096 Apr 24 02:00 .
drwxr-xr-x 5 ************** ************** 4096 Apr 24 02:00 ..
drwxr-xr-x 5 ************** ************** 4096 Apr 24 02:00 v11  # Only the v11 directory exists, not the v10 directory.

[KevinNitroG]

I also faced this issue, but it doesn't fail my job. And it doesn't even read my

  "devEngines": {
    "packageManager": {
      "name": "pnpm",
      "version": "10.28.2",
      "onFail": "warn"
    }
  },
  "packageManager": "pnpm@10.28.2"

I have to specify the version for my setup step

[MindTooth]

This started to hit us over at https://github.com/srcery-colors/srcery.sh suddenly. Really no clear indication what is causing other than reading posts like this.