@Adonis maybe some internet issue try one more time, if you will get error again then post your error message(build log).
again not working and getting this error in buildlog
no i am working online, and I also updated the gcloud components.
Looks like u have installed app inventor locally but u forgot to start build server. Run ant RunLocalBuildServer .
yeah I once again ran that and now its working fine. Thanks for replying.