Playing local Audio Files suddenly not working anymore


I build an app using the ngCordove Media plugin. Everything work fine one year ago. I followed this Tutorial:

Then the app wasnt further development until now. I installed ionic, cordova etc. again on my mac, but the audio files won’t play on my Android device anymore. I didnt test it on IOS yet.

The Media Error Object returns the Error Code 1: MEDIA_ERR_ABORTED and the Error Message: Undefined.

Cant find a solution. Everything worked fine before. now nothing works. All solutions I could find are very outdated.

Hope you can help me.