# Error when attempting to use Tailwind CSS with Nuxt 3
undefined tailwind variables, css sourcemap warnings
pending triageneeds reproduction
After update to Nuxt 3.5.0 after run npm i Cannot read properties of undefined (reading 'replace')
3.xpending triageneeds reproduction
Cannot start nuxt Cannot find module simpleConfig.stub.js
3.xpending triage
module config types aren't recognised in `defineNuxtConfig()`
3.xbug❗ p4-importantschema