XCode Simulator Error

Error Alert Message: com.apple.CoreSimulator.SimRuntime.iOS-12-2 simulator runtime is not available.

• 杀死所有模拟器进程

$ sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService

• 设置正确的XCode路径

$ sudo xcode-select -s  /Applications/Xcode.app/Contents/Developer

• 如果还不行，重置所有模拟器

$ xcrun simctl erase all