Error on missing files

[crudolf]

I receive this error when including the latest version 3.1.2 using carthage:

2023-05-22 17:50:29.526 xcodebuild[4003:32086] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled)
2023-05-22 17:50:29.556 xcodebuild[4003:32086] Writing error result bundle to /var/folders/gq/rbnsfpzj4dbggs7p2qkgj31h0000gn/T/ResultBundle_2023-22-05_17-50-0029.xcresult
xcodebuild: error: Unable to read project 'LGSideMenuControllerDemo.xcodeproj' from folder '/Carthage/Checkouts/LGSideMenuController/Demo/Objective-C'.
Reason: Project Carthage/Checkouts/LGSideMenuController/Demo/Objective-C/LGSideMenuControllerDemo.xcodeproj cannot be opened because it is missing its project.pbxproj file.

After removing the full demo project from the checkout, the build worked.