Node-sass is not installed, what should I do?

Question

Node.js

Error downloading binary from https://github.com/sass/node-sass/releases/downloa... Cannot download " https://github.com/sass/node-sass/releases " after
npm install node-sass /downloa... ": connect ETIMEDOUT 52.216.17.48:443 Timed out whilst downloading the prebuilt binary Hint: If github.com is not accessible in your location try setting a proxy via HTTP_PROXY, eg export HTTP_PROXY= example.com:1234 or configure npm proxy via npm config set proxy example.com:8080