How do I fix my "No valid exports main found" compile error?

I tried to compile the files using

npm start

but it doesn't works.

In my chrome and terminal, it says like this way.

Failed to compile ./src/index.css (./node_modules/css-loader/dist/cjs.js??ref--6-oneOf-3-1!./node_modules/postcss-loader/src??postcss!./src/index.css) Error: No valid exports main found for 'C:\Users\Jiwoo\Desktop\movie_app_2020\node_modules\colorette'

I tried to delete folder [node_modules] and typing "npm i" but it doesn't works too.

How can I fix my error?