Error on npm install - Angular 2

I'm doing the Basics Course for Angular 2 on my pc and using git hub to clone the application to my MAC so I can continue the course outside of my house. However, after cloning the repository and running "npm install", this error appeared:

MacBook-Air-de-Bernardo:basicscourse bepdias$ npm install

fsevents@1.1.2 install /Users/bepdias/Documents/basicscourse/node_modules/fsevents node install

[fsevents] Success: "/Users/bepdias/Documents/basicscourse/node_modules/fsevents/lib/binding/Release/node-v48-darwin-x64/fse.node" already installed Pass --update-binary to reinstall or --build-from-source to recompile

photoblog@ postinstall /Users/bepdias/Documents/basicscourse npm run build

photoblog@ build /Users/bepdias/Documents/basicscourse webpack

sh: /Users/bepdias/Documents/basicscourse/node_modules/.bin/webpack: Permission denied

npm ERR! Darwin 14.5.0 npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "build" npm ERR! node v6.11.1 npm ERR! npm v3.10.10 npm ERR! code ELIFECYCLE npm ERR! photoblog@ build: webpack npm ERR! Exit status 126 npm ERR! npm ERR! Failed at the photoblog@ build script 'webpack'. npm ERR! Make sure you have the latest version of node.js and npm installed. npm ERR! If you do, this is most likely a problem with the photoblog package, npm ERR! not with npm itself. npm ERR! Tell the author that this fails on your system: npm ERR! webpack npm ERR! You can get information on how to open an issue for this project with: npm ERR! npm bugs photoblog npm ERR! Or if that isn't available, you can get their info via: npm ERR! npm owner ls photoblog npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request: npm ERR! /Users/bepdias/Documents/basicscourse/npm-debug.log

npm WARN photoblog@ No repository field. npm WARN photoblog@ No license field. npm ERR! Darwin 14.5.0 npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" npm ERR! node v6.11.1 npm ERR! npm v3.10.10 npm ERR! code ELIFECYCLE npm ERR! photoblog@ postinstall: npm run build npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the photoblog@ postinstall script 'npm run build'. npm ERR! Make sure you have the latest version of node.js and npm installed. npm ERR! If you do, this is most likely a problem with the photoblog package, npm ERR! not with npm itself. npm ERR! Tell the author that this fails on your system: npm ERR! npm run build npm ERR! You can get information on how to open an issue for this project with: npm ERR! npm bugs photoblog npm ERR! Or if that isn't available, you can get their info via: npm ERR! npm owner ls photoblog npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:

npm ERR! /Users/bepdias/Documents/basicscourse/npm-debug.log

The application was working just fine the last time I commit it to the repository. Does anyone know whats wrong?