npm install throwing error in node-sass

node-sass@2.1.1 install /home/user/Documents/project/node_modules/node-sass
> node scripts/install.js

WARN invalid config loglevel="notice"
Can not download file from http://ift.tt/2uFeqsP

> node-sass@2.1.1 postinstall /home/user/Documents/project/node_modules/node-sass
> node scripts/build.js

module.js:487
    throw err;
    ^

Error: Cannot find module '/home/user/Documents/project/node_modules/node-sass/node_modules/pangyp/bin/node-gyp'
    at Function.Module._resolveFilename (module.js:485:15)
    at Function.Module._load (module.js:437:25)
    at Function.Module.runMain (module.js:605:10)
    at startup (bootstrap_node.js:158:16)
    at bootstrap_node.js:575:3
Build failed
added 2186 packages in 42.166s

I tried so far:

• npm rebuild
• npm rebuild node-sass
• npm uninstall -g node-sass
• rm -rf node_module