I had the exact same set of errors as @SpaceMan in my macOS app. Here the entire error stack:
Could not launch “CloudKitCMS”
Domain: IDELaunchErrorDomain
Code: 20
Recovery Suggestion: Runningboard has returned error 5. Please check the system logs for the underlying cause of the error.
--
Could not launch “CloudKitCMS”
Domain: IDELaunchErrorDomain
Code: 20
Recovery Suggestion: Runningboard has returned error 5. Please check the system logs for the underlying cause of the error.
--
The operation couldn’t be completed. Launch failed.
Domain: RBSRequestErrorDomain
Code: 5
Failure Reason: Launch failed.
--
Launchd job spawn failed
Domain: NSPOSIXErrorDomain
Code: 153
--
I tried editing apple id but without any success. I noticed that some people refer entitlements, so I inspected by CloudKitCMS.entitlements file and found that several keys there are totally irrelevant to the project:
<key>aps-environment</key>
<string>development</string>
<key>com.apple.developer.applesignin</key>
<array>
<string></string>
</array>
<key>com.apple.developer.aps-environment</key>
<string>development</string>
So I completely removed the above keys and now it runs! I must note that my project doesn't use Push Notifications (aps-related keys) and I don't know how those keys got there, probably Xcode added them automatically.
So my recommendation would be to check the entitlements and remove everything that's not enabled for the bundle id.