npm install permission denied (macOS)

Question

To install a Bootstrap theme I want to run npm install. However I always receive a permission denied error.

I already tried nvm and then switched with

Answer 1

Check permissions of your project root with ls -l /Users/Marc/Desktop/Dev/masterclass/. If the owner is not $USER, delete your node_modules directory, try changing the owner of that directory instead and run npm install again.

cd /Users/Marc/Desktop/Dev
rm -rf ./masterclass/node_mdoules/
chown -R $USER ./masterclass/
cd masterclass    
npm install