This error message typically occurs when you are attempting to open an Xcode project file that was created using a newer version of Xcode than the one you are currently using. Xcode updates often introduce new features and changes to the project file format, which can result in compatibility issues when opening files with older versions of the software.
To resolve this issue, you will need to update your version of Xcode to match the version that was used to create the project file. Alternatively, you may need to ask the project creator to provide you with a compatible version of the project file that can be opened with your current version of Xcode.
To update your version of Xcode, you can download the latest version from the Mac App Store or from the Apple Developer website. Once you have installed the latest version, you should be able to open the project file without encountering any compatibility issues.