I am throwing exception in Cakephp 2.5 from a condition, using PHP 7.2, it throwing nothing, why?

Question

I have updated the php version in my cakephp 2.5 application, here what i see the exception is not working in my application.

haven't get any solution yet to try anything

if (count($suborgs)== 0) {
throw new InternalErrorException("User ".$user['id']." does not have suborgs and only have PRINCIPAL scope"); }

Exception should work for me