我有一个离子v1应用程序。 它使用以下插件：
cordova-plugin-console 1.0.4 "Console"
cordova-plugin-device 1.1.3 "Device"
cordova-plugin-firebase 0.1.19 "Google Firebase Plugin"
cordova-plugin-globalization 1.0.6-dev "Globalization"
cordova-plugin-inappbrowser 1.7.0 "InAppBrowser"
cordova-plugin-splashscreen 4.0.0 "Splashscreen"
cordova-plugin-statusbar 2.2.0 "StatusBar"
cordova-plugin-transport-security 0.1.2 "App Transport Security"
ionic-plugin-keyboard 2.2.1 "Keyboard"
phonegap-facebook-plugin 0.12.0 "Facebook Connect"
当我尝试运行类似cordova run browser的内容时，我有以下输出
Linting www/js/views.js
File www/js/views.js has no errors.
-----------------------------------------
Error: Cannot read property 'variables' of undefined
我该如何解决这个问题？