I get many of those... Where does the page cease to function?
Your image doesn't show an issue - as in a Log(" this exception ") exception?
As I did initially, you need to experiment thoroughly before posting issues without particular reference to WHERE the problem occurs.
Too many of these is like crying WOLF. Eventually, you will get ignored. No one will help because they don't understand the specifics and do not have time to figure out what the heck you are referring to, and won't comment.
In time, as you study (ABM / B4J) on your own, you shall resolve most of your issues - without ever posting.
Thanks