Try to remove and add your platform. With the introdction of cordova 7 the file structure of the Android platform did change
ionic cordova platform rm android --save
ionic cordova platform add android@latest --save
http://cordova.apache.org/announcements/2017/12/04/cordova-android-7.0.0.html
You did clone your project, so maybe on the source project you were using cordova-android < 7