Anyone been having issues with Xcode 11.7?

I have had a Today Widget out for about 5 months and work on it daily. Today, after updating to Xcode 11.7 and iOS 13.7 I can no longer compile it. I get the 'Waiting to Attach' message. I've restarted my iPhone, Xcode and Mac a couple of times but still no joy.

Any help would be much appreciated.