Quick fix

Change your sass version to use the tilde ~ and it should work. This is because it will prohibit updated minor versions from being used, and allow only patches.

Example package.json line:

"sass": "~1.32.6"

See https://nodesource.com/blog/semver-tilde-and-caret/

Future-compatible fix

For those of you who want to refactor your use of /, you need to get the style-resources module. With it, once adding '@nuxtjs/style-resources' to your Nuxt config buildModules, you can set hoistUseStatements: true in a styleResources property in the config. This will allow you to @use 'sass:math'; in your style block where you will change a/b to math.div(a, b)