Error in companion

What is the meaning of this error. please help. thank guys

@ILOCANO_TV

On What Components are giving errors?
Also, have you tried building an APK file?

Attach aia and blocks for testing

I think its the ironsource banner, I cannot upload apk because i cannot build it.Its Dx8 execution failed

Does anyone here know if vungle, chartboost and startapp ads work for you?