iTunes Store Operation Failed. A downloaded software component is corrupted and will not be used

Question

I got this error, while trying to upload archive to App Store:

A downloaded software component is corrupted and will not be used. https://contentdelivery.itunes.apple.com/transporter/repositories/j2se8/1.12.0/bundles/com.apple.transporter.mediatoolkit-1.12.0.jar

I'm using Mac High Sierra, have all latest updates for Xcode, I'm not sure about which kind of corrupted software is error about.

Answer 1

I think I found the solution, I generated the project using react-native, when I wanted to test iOS part of the project on my iPhone, I found out that there was no support for the OS version 12.1, so I downloaded zip archive for the support of version 12.0, added it to Xcode, and forgot about it.

However, it seems that it's creating the problem during the sending app to App Store, so I deleted support for OS version 12.0 which I had added manually and restarted Xcode, after that Xcode started work as expected.