Count not find Bundle ID

[mevdev]

This is the error I'm getting:
Error: Could not find the Bundle ID of the given target Installer (iOS)

My project is in a folder at the root of my repo. I've put this script in and ran:
xcodebuild -list
It showed a string that is not the scheme name, but the underlying Target Name apparently.

So when I run:
xcodebuild -target 'TargetName' -showBuildSettings
It gives me all of the settings (but I need to be in the root of my project folder). It includes the key 'PRODUCT_BUNDLE_IDENTIFIER' and it shows my correct bundle id. Also there is only one.

At first it was very unclear what the TargetName actually was. It would be MUCH easier to just put in the bundle id.

BTW Thanks for making this github action.

Any ideas?