Sample app doesn't run in Xcode 15.4 (or due to lack of docu I'm clueless how to run it)

[funnel20]

When I checkout the project from Github and open the sample app in Xcode, it doesn't compile.

Steps to reproduce:

1. In Finder, from folder "InAppSettingsKitSampleApp", open "IASKSampleApp.xcodeproj"
2. In Xcode, select a simulator and Run
3. A bunch of errors are shown:

Questions:

1. Is this the correct approach to use the Sample app? E.g. did I open the correct Xcode project from folder "InAppSettingsKitSampleApp", since there are multiple?
2. Based on question 1; would it be possible to add a section to the docu on how to use the Sample App?