How to hide the backtrace from appearing?

I apologize if this is covered somewhere, I searched but could not find it documented.

How do I disable Piwik form displaying a backtrace for every error (e.g. for just accessing an area without logging in or a not having admin access and accessing an admin area). It is revealing system paths and info that the user does not need to know.

I had thought this was done in piwik.php $GLOBALS[‘PIWIK_TRACKER_DEBUG’] = false; but that is set to false and it is still displaying all of the backtrace messages.

any suggestions are appreciated.

This is a bug. please create a ticket at: dev.piwik.org