Please look thru your error log for the string gyp info using node-gyp@ and if the version number is less than the current release of node-gyp then please upgrade using the instructions at https://github.com/nodejs/node-gyp/blob/master/docs/Updating-npm-bundled-node-gyp.md and try your command again.

Requests for help with node-sass are very common. Please be aware that this package is deprecated, you should seek alternatives and avoid opening new issues about it here.

• Node Version:
• Platform:
• Compiler:
• Module:

Paste your log here, between the backticks. It can be:
  - npm --verbose output,
  - or contents of npm-debug.log,
  - or output of node-gyp rebuild --verbose.
Include the command you were trying to run.

This should look like this:

>npm --verbose
npm info it worked if it ends with ok
npm verb cli [
npm verb cli   'C:\\...\\node\\13.9.0\\x64\\node.exe',
npm verb cli   'C:\\...\\node\\13.9.0\\x64\\node_modules\\npm\\bin\\npm-cli.js',
npm verb cli   '--verbose'
npm verb cli ]
npm info using npm@6.13.7
npm info using node@v13.9.0

Usage: npm <command>
(...)