ITMS-90747: Basic sticker pack with no code, yet App Store Connect thinks there's 32bit code in there

问题

Received this error: ITMS-90863: Apple silicon Macs support issue - The app has LSApplicationLaunchProhibited set to true. This is not supported on Mac.

ITMS-90747: Architecture incompatible with MinimumOSVersion. The app bundle specifies a MinimumOSVersion of '14.1' but contains a 32-bit architecture that is unsupported on iOS 12 and later.

I have seen the first warning addressed elsewhere (with no answer yet) but I'm getting both errors, always together, and they feel like they might be related.

The first thing I noticed was that the Project Document was set to Project Format Xcode 9.3-compatible, so I changed that to Xcode 12, thinking that would eliminate the 32 bit problem. But that had no impact.

The Targeted Device Families are iPhone and iPad only, and I have toggled the iOS Deployment Target from 10.0 through 14.0, and that hasn't changed anything, either.

And cmd-F'ing "LSApplicationLaunchProhibited" isn't finding anything I can switch to false to test that.

Bottom line: Simple sticker pack, so there was zero code written, beyond setting up targets and the document settings. It shouldn't be generating a 32 bit version of anything and shouldn't be messing around with Mac Apple Silicon issues, and yet here we are.

First time here, so thanks for obliging these newbie questions!

*Footnote: Half of my question was asked here

ERROR: Apple silicon Macs support issue. The app has LSApplicationLaunchProhibited set to true. This is not supported on Mac, How to fix it?

... so if someone answers here I'll share it there.

Update:

I think I fixed the 32 bit part of the problem, but the solution is counter-intuitive (at least to me). By changing the deployment target to iOS 10, I got it through AppStoreConnect without the 32 bit warning.

But I'm still getting the Apple silicon warning ...