Fixed: The project at ‘/Users/' cannot be opened because it is in a future Xcode project file....

Learn how to fix the error The project at ‘/Users/....xcodeproj’ cannot be opened because it is in a future Xcode project file format. Adjust the project format using a compatible version of Xcode to allow it to be opened by this version of Xcode. Check written tutorial on https://www.codespeedy.com/future-project-xcode-version/