I've added external swift frameworks to my project.
App size increased up to 87 Mb.
Since that moment I can't upload it to App Store.
Niether via App Loader, nor XCode organiser, nor FastLane tool.
Each time iTMSTransporter reports:
Communication error. Please use diagnostic mode to check connectivity.
Error while processing package: 1042554311.itmsp
An exception has occurred : Communication error. Please use diagnostic mode to check connectivity.
XCode Version 10.1 (10B61)
I tried to upload many times via several networks (cell, wifi, lan) and two computers - no luck.
I've open an report in Apple Feedback Assistant and uploaded my IPA file there as attachment at once.
I'm faced with it too. In my case it was extra dot at the end of Associated Domains string in entitlements. Check your settings regarding Associated Domains