Error while publishing my app in Ionic 4 beta

I’m trying to publish my app in Ionic 4 beta and getting some errors. How can I do this.

Any help please.

Can you explain what are you exactly doing and list the errors?

@pabloo87 kindly check the attached, thats what I get when I try to build an android apk.
This is after running this in cmd

ionic cordova build android --prod --release