Hi there! I just did another try with transporter and.... it worked perfectly!! I didn't change anything since last time so, I'm 99% confident it was a Apple problem: somehow, communication with AppStore Connect was returning some error that Mac couldn't handle, hence the reboots...

Hi everyone! I have the same problem! I was trying to upload my build to apple via Xcode as I normally do, but the process stopped due to this error “AppStore connect operation error part (number) failed to upload. The request timed out”. So i did a second try and Mac started to freeze and eventually reboot itself. Then I did a try with Transporter but the same thing happened…. is there any solution? Thanks