Unable to remove file Ionic - Code 6 (NO_MODIFICATION_ALLOWED_ERR)

I’m using Ionic 2 on my Android (7.1.2) device and getting code 6 when I use the removeFile method of the ionic-native file object. I have permission to write on external storage.

I’m calling the method this way: this.file.removeFile(path, this.entries[i].name)

Where path is: ‘file:///android_asset/www/assets/melodies/E/’

and this.entries[i].name is: ‘500hz.wav’

The file exists in path. I’ve tried to use the method “moveFile” to make a logical deletion but it returns the same ‘No Modification Allowed Error’.