R CMD check found WARNINGs

Process completed with exit code 1.

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: n1hility/cancel-previous-runs@v2, actions/checkout@v2, actions/cache@v2. 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, actions/checkout@v2, actions/cache@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

Missing link or links in Rd file 'ess_basic.Rd':

Undocumented code objects:

Missing link or links in Rd file 'ess_basic.Rd':