Hey !
I'm having this issue installing vuetify on a rails app.
https://vuetifyjs.com/en/getting-started/frequently-asked-questions#invalid-css-after-content-expected-was-material-light
Looking at my yarn.lock file, I realised node_sass was a Rails Webpacker dependency.
Any chance someone had same issue and knows how to either remove node_sass dependency OR force wepack to use sass lib ?