IonicWebViewEngine.java:137: error: cannot find symbol | Error: cannot find symbol variable LOLLIPOP [cordova] D:\sync\websvr\ionic\test\reader\envirotech_book_reader_mobile\platforms\android\app\src\main\java\com\ionicframework\cordova\webview\IonicWebViewEngine.java:11: error: package android.support.annotation does not exist [cordova] import android.support.annotation.RequiresApi; [cordova] ^ [cordova] D:\sync\websvr\ionic\test\reader\envirotech_book_reader_mobile\platforms\android\app\src\main\java\com\ionicframework\cordova\webview\IonicWebViewEngine.java:137: error: cannot find symbol [cordova] @RequiresApi(Build.VERSION_CODES.LOLLIPOP) [cordova] ^ [cordova] symbol: class RequiresApi [cordova] […]