Cannot resolve path to local package.

[GiorgosSpil]

Hello, I am building a project and I am using my own ui-library. I know it works because it works on other projects as well. When I added it, this error keeps coming no matter what I do ( build, run dev etc). When running npm i the packages seems to install fine in node modules. I am referencing in dependencies like that
"ui-lib":"file:ui-lib-1.4.2.tgz" . I tried all the things I found but nothing helped. Using node 18.18.2, react 18.3.1 , vite 5.3.4 .

[commonjs--resolver] [postcss] The returned path from the "fileResolve" option must be absolute.
file: C:/Users/user/source/repos/Frontend/account/node_modules/ui-lib/lib/index.js:undefined:NaN
at FileSystemLoader.fetch (file:///C:/Users/user/source/repos/Frontend/account/node_modules/ui-lib/lib/vite/dist/node/chunks/dep-CjZz522d.js:1119:13)
    at async Parser.fetchImport (file:///C:/Users/user/source/repos/Frontend/account/node_modules/ui-lib/lib/vite/dist/node/chunks/dep-CjZz522d.js:352:21)
    at async Promise.all (index 0)
    at async OnceExit (file:///C:/Users/user/source/repos/Frontend/account/node_modules/ui-lib/lib/vite/dist/node/chunks/dep-CjZz522d.js:309:9)
    at async LazyResult.runAsync (C:/Users/user/source/repos/Frontend/account/node_modules/ui-lib/lib\postcss\lib\lazy-result.js:298:15)

THIS IS MY CONFIG

import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
import path from 'path'

export default defineConfig({
  base: '',
  plugins: [react()],
  resolve: {
    alias: [
      {
        find: 'ui-lib',
        replacement: path.resolve(__dirname, 'node_modules','ui-lib'),
      },
    ]
  }
})

[HSULGIT]

Is it possible that you used "composes:" in CSS files to reuse styles from other CSS classes in different files?

If you move files without updating the composes: paths accordingly (for example, from ../../../cssModules/Global.module.css to ../../cssModules/Global.module.css), the paths may no longer be correct.

This can cause errors like:
[vite] Internal server error: [postcss] The returned path from the "fileResolve" option must be absolute.

I encountered this issue and fixed it by correcting the composes: paths to their new, accurate locations.