Add to changelog

Author: paulbalandan

user_guide_src/source/changelogs/v4.2.8.rst

@@ -39,5 +39,6 @@ Bugs Fixed
 - Fixed a bug when the ``CodeIgniter\HTTP\IncomingRequest::getPostGet()`` and ``CodeIgniter\HTTP\IncomingRequest::getGetPost()`` methods didn't return values from the other stream when ``index`` was set to ``null``.
 - Fixed a bug when ``binds`` weren't cleaned properly when calling ``CodeIgniter\Database\Postgre::replace()`` multiple times in the context.
 - Fixed a bug when the ``CodeIgniter\Database\SQLSRV\PreparedQuery::_getResult()`` was returning the bool value instead of the resource.
+- Fixed a bug in the error handler where in cases the callback cannot process the error level it does not pass the error to PHP's standard error handler.
 
 See the repo's `CHANGELOG.md <https://github.com/codeigniter4/CodeIgniter4/blob/develop/CHANGELOG.md>`_ for a complete list of bugs fixed.