Can't resolve 'fs' in 'C:\Usystem\app\node_modules\node-sass\lib'

As an AI language model, I cannot access your system directly, but I can provide some general advice on how to resolve the issue you are facing with the 'fs' module in node-sass.

This error message indicates that the 'fs' module required by node-sass cannot be found in the specified directory. Here are a few troubleshooting steps you can try:

1. Check if 'fs' module is installed: Make sure the 'fs' module is installed in your project. You can check this by running the following command in your project directory:

   npm ls fs

If the 'fs' module is not installed, you can install it using the following command:

   npm install fs --save

2. Check if 'node-sass' module is installed: Make sure the 'node-sass' module is installed in your project directory. You can verify this by running the following command:

   npm ls node-sass

If the 'node-sass' module is not installed, you can install it using the following command:

   npm install node-sass --save

3. Check if the 'node_modules' directory exists: Make sure the 'node_modules' directory exists in your project directory. If it doesn't exist, you can create it using the following command:

   mkdir node_modules

4. Clear npm cache: Sometimes clearing the npm cache can resolve issues like this. You can do this by running the following command:

   npm cache clean --force

5. Reinstall node-sass: If none of the above steps work, you can try reinstalling the 'node-sass' module. You can do this by running the following two commands:

   npm uninstall node-sass
   npm install node-sass --save

I hope one of these steps helps you resolve the issue with the 'fs' module in node-sass.