Error "DX execution failed" showing

Sir my apk not builed .but smoothly running on companion
i not use external monetization component.please help me

What extensions are you using?

your error message is DX execution failed
this is a very general error message and therefore it’s hard to say, what might be the issue in your case
however there is SteveJG’s monster list of tips and tricks you can check for possible reasons…
good luck!
let us know, what you find out…
btw. it would help to search the forum…