Fresh install: npm run dev & npm run production fail. npm run watch works

Any idea on why this is happening on a clean install? All dependencies are up to date.

ERROR  Failed to compile with 5 errors

These dependencies were not found in node_modules:

* ../fonts/bootstrap/glyphicons-halflings-regular.eot
* ../fonts/bootstrap/glyphicons-halflings-regular.woff2
* ../fonts/bootstrap/glyphicons-halflings-regular.woff
* ../fonts/bootstrap/glyphicons-halflings-regular.ttf
* ../fonts/bootstrap/glyphicons-halflings-regular.svg

Did you forget to run npm install --save for them?
            Asset      Size  Chunks                    Chunk Names
       /js/app.js    288 kB       0  [emitted]  [big]  /js/app
mix-manifest.json  32 bytes          [emitted]         

npm ERR! Darwin 16.4.0
npm ERR! argv "/usr/local/Cellar/node/7.5.0/bin/node" "/usr/local/bin/npm" "run" "production"
npm ERR! node v7.5.0
npm ERR! npm  v4.2.0
npm ERR! code ELIFECYCLE
npm ERR! errno 2
npm ERR! @ production: `node node_modules/cross-env/bin/cross-env.js NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js`
npm ERR! Exit status 2
npm ERR! 
npm ERR! Failed at the @ production script 'node node_modules/cross-env/bin/cross-env.js NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js'.
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  package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node node_modules/cross-env/bin/cross-env.js NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs 
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls 
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/dave/.npm/_logs/2017-02-03T04_57_25_004Z-debug.log

[mirr]

I was able to resolve this after reading https://www.npmjs.com/package/bootstrap-sass. It appears bootstrap-sprockets is required. So, here’s what’s inside in my app.scss.

// Fonts @import url(https://fonts.googleapis.com/css?family=Raleway:300,400,600);

// Variables @import "variables";

// Bootstrap @import "node_modules/bootstrap-sass/assets/stylesheets/bootstrap-sprockets"; @import "node_modules/bootstrap-sass/assets/stylesheets/bootstrap";

[dawiyo]

I commented out @import "node_modules/bootstrap-sass/assets/stylesheets/bootstrap"; in resources/assets/sass/app.scss and the errors have stopped. Must be an issue with their package.