App not working

My Match App stopped working properly and instead the phone simulator shows blank white screen for a few seconds and then it goes back to Xcode and shows this monitor. Sample image below.!

I can’t seem to post the image.

I note that you have CleanMyMac installed. CleanMyMac often removes software or files that should not be removed and can cause more problems than it fixes.

Re-install Xcode and see if that solves the issue.