i have been build my ionic app as well for my store . , but when am trying to build my app . through command line in my mac
by this command: ionic cordova build android
i got this message 
Naders-MacBook-Pro:App Source Code nadermohammad$ ionic cordova build android
ionic-app-scripts build --target cordova --platform android
/Users/nadermohammad/Desktop/codecanyon-21561737-ionic-woocommerce-universal-ios-android-ecommerce-store-full-mobile-app (2)/App Source Code/node_modules/.bin/ionic-app-scripts: line 1: …/@ionic/app-scripts/bin/ionic-app-scripts.js: No such file or directory
[ERROR] An error occurred while running subprocess ionic-app-scripts.
ionic-app-scripts build --target cordova --platform android exited with exit code 127.
Re-running this command with the --verbose flag may provide more information.
Naders-MacBook-Pro:App Source Code nadermohammad$
=============
and when i try to make this command of . ionic cordova --verbose
i got this details :
Naders-MacBook-Pro:App Source Code nadermohammad$ ionic cordova build android --verbose
ionic:lib Terminal info: { tty: true, ci: false, windows: false } +0ms
ionic:lib CLI global options: { _: [ ‘cordova’, ‘build’, ‘android’ ], help: null , h: null , verbose: true, quiet: null , interactive: true, color: true, confirm: null , json: null , project: null , ‘–’: } +10ms
ionic:lib:project Project type from config: Ionic 2/3 (ionic-angular) +0ms
ionic:lib:project Project details: { configPath: ‘/Users/nadermohammad/Desktop/codecanyon-21561737-ionic-woocommerce-universal-ios-android-ecommerce-store-full-mobile-app (2)/App Source Code/ionic.config.json’, errors: , context: ‘app’, type: ‘ionic-angular’ } +0ms
ionic Context: { binPath: ‘/usr/local/lib/node_modules/ionic/bin/ionic’, libPath: ‘/usr/local/lib/node_modules/ionic’, execPath: ‘/Users/nadermohammad/Desktop/codecanyon-21561737-ionic-woocommerce-universal-ios-android-ecommerce-store-full-mobile-app (2)/App Source Code’, version: ‘4.12.0’ } +0ms
ionic:lib:integrations:cordova:config Using config.xml: /Users/nadermohammad/Desktop/codecanyon-21561737-ionic-woocommerce-universal-ios-android-ecommerce-store-full-mobile-app (2)/App Source Code/config.xml +0ms
ionic:lib:telemetry Sending telemetry for command: ‘ionic cordova build’ [ ‘android’, ‘–verbose’, ‘–interactive’, ‘–color’ ] +0ms
ionic:lib:hooks Looking for ionic:build:before npm script. +0ms
ionic:lib:project:ionic-angular:build Looking for ionic:build npm script. +0ms
ionic:lib:project:ionic-angular:build Found ionic:build, but it is the default. Not running. +1ms
ionic-app-scripts build --target cordova --platform android
/Users/nadermohammad/Desktop/codecanyon-21561737-ionic-woocommerce-universal-ios-android-ecommerce-store-full-mobile-app (2)/App Source Code/node_modules/.bin/ionic-app-scripts: line 1: …/@ionic/app-scripts/bin/ionic-app-scripts.js: No such file or directory
[ ERROR ] An error occurred while running subprocess ionic-app-scripts .
ionic-app-scripts build --target cordova --platform android exited with exit code 127.
i hope to get the right solution for that