[Bug Report]: v2 Unnecessary panic

[ErKeLost]

Steps to reproduce

Introducing a non-existent file or address triggers panic, which seems to be a common problem

import { createApp } from 'vue'
import App from './App.vue'
// import 'uno.css'  unresolve file 

createApp(App).mount('#app')

• cause error with import 'uno.css'

Reproduce link

No response

What is actually happening?

error

System Info

mac