Failed to find newest available simulator runtime - Image.xcassets when building RN app on iOS
sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService
When upgrading, you may drag around old simulators no longer available with your current version of Xcode. You can clean these by running this command in Terminal:
xcrun simctl delete unavailable
Quit Xcode first just for good measures. From the documentation:
Delete a device or all unavailable devices.
Installing/Reinstalling Simulators worked!!
Look under (XCode Preferences-> Downloads -> Components)
Solution 4 (Sam Solution)
just delete Xcode and install the newest version from developer.apple.com/download/more .
sudo xcrun simctl shutdown all && sudo xcrun simctl erase all
It helped to fix Jenkins