This section shows you the history of problems with apps which have previously occured. Like in this case, YouTube had crashed once, so....I hope you got the point.
it's crash report of YouTube mean while when opening an app it may closed automatically or touch screen not working properly then it's called app crash.
I have also see this message in device care! But I never faced any app crash. All apps in my phone works perfectly without any issue but I still see this message without any reason and I cannot clear this messages :(
