Hi , i solved my problem, thank you for the attention 
I deleted all LibPNG.a file in my engine folder and it worked.
Donāt know if this is right but iāve managed to publish in the Google Play.
But now i have a second problem:
When i open the app, the screen is white and the camera does not work.
Do I need to āaskā permition to use it, change the Android Manifest, or something like that?
Thanks again and sorry to bother.