Update Xcode to version 9.0.1.
In the new version of the program:
• The iPhone X simulator has been improved;
• Fixed a problem with the synchronization of Test Navigator;
• Additional fixes and stability improvements.
Also in Xcode 9 there are many improvements: wireless installation and debugging for iOS and tvOS applications on devices over the network, the simulator can simulate several devices simultaneously, the project navigator automatically saves files and groups in sync with the Finder, Xcode server no longer requires a MacOS server and can be configured in Xcode, latest SDKs include the Core ML framework for machine learning and ARKit for augmented reality and much more.