Netlify Build Error 255 (ToCSS) troubleshooting

OK, looking closer …

DEBUG searching executable at </Users/computer/Code/jbm-marketing-site/node_modules/hugo-cli/tmp/hugo_0.71.1_darwin_amd64>
INFO hugo not found. Attempting to fetch it...
DEBUG downloading archive from <https://github.com/gohugoio/hugo/releases/download/v0.71.1/hugo_0.71.1_macOS-64bit.tar.gz>
INFO fetched hugo 0.71.1

The above log confuses me. Is this you running the netlify dev tool locally? Re. the refs to Darwin/MacOS. I have no idea how that work in all of this, though …