Module not found: Error: Can't resolve './bootstrap' in 'resources\assets\js'

Please help me, to resolve this error. ERROR in ./resources/assets/js/app.js Module not found: Error: Can't resolve './bootstrap' in 'resources\assets\js' @ ./resources/assets/js/app.js 8:0-22 @ multi ./resources/assets/js/app.js ./resources/assets/sass/app.scss

via Chebli Mohamed