Some web hosts do not give
people access to their PHP error logs or to edit their PHP.ini. In
cases like this you can utilize osTicket itself to display the error
messages.
edit \bootstrap.php
find these lines
on or about line 32-33:
ini_set('display_errors', 0);
ini_set('display_startup_errors', 0);
change them to:
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
Make sure that you change them back when you are done. This should make any PHP errors get displayed to the screen when they happen.