Android 4.4 Weex SDK Error

[Herrick66]

Error on creating weex instance,WXEnvironment getAppVersionName Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.pm.PackageManager android.app.Application.getPackageManager()' on a null object reference

WXEnvironment getAppCacheFile Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.Context android.app.Application.getApplicationContext()' on a null object reference

E/weex: WXEnvironment scale Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.app.Application.getResources()' on a null object reference