So I need to understand the contents of this picture.

I have searched through the other articles related to this on StackOverflow and I haven't found an answer or even another URL to a reference explaining this.
A little bit of context:
I am using UIPasteboard.general to copy some text and whenever I send the app to the background and enter any other application the former app crashes.
Now what's confusing is that I can still successfully paste what UIPasteboard has copied but still the app has crashed.
So I would like to troubleshoot but I do not have the slightest idea of where to begin looking at this.
So any insight anyone can give in this would be greatly appreciated!