On Mac OS 10.15.7, in Xcode 12.1, when I try to upload my app binary to App Store Connect, I am getting:
"App Store Connect Operation Error: Please update iTMSTransporter to a newer version. (4107)"
I've tried restarting my computer, deleting .itmstransporter, and various other things to no avail.
In the meantime, I've downloaded the Transporter app from the Mac App Store and have been able to submit from there by exporting the binary rather than uploading it to the App Store, but I'd like to regain the functionality in Xcode.
Does anyone have a clue on what may be causing this?