Xcode project not showing list of simulators

Question

I open my project in Xcode 6.1. When I try to run the project, the button is grayed out. When I try to go to Product > Clean, the option is grayed out. When

Answer 1

Lower the Deployment Target version. For example you have set the target as iOS 13.4 but your Xcode version is lower and there is no iOS 13.4 installed simulator.