R CMD check found ERRORs

Process completed with exit code 1.

No such keg: /opt/homebrew/Cellar/r

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: n1hility/cancel-previous-runs@v2, actions/checkout@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The following actions uses node12 which is deprecated and will be forced to run on node16: n1hility/cancel-previous-runs@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

unable to access index for repository https://mc-stan.org/r-packages/bin/macosx/big-sur-arm64/contrib/4.4:

pkg-config 0.29.2_3 is already installed and up-to-date. To reinstall 0.29.2_3, run: brew reinstall pkg-config

HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK is set: not checking for outdated dependents or dependents with broken linkage!