Fatal error: Uncaught TypeError: set_error_handler(): Argument #1 ($callback) must be a valid callback or null, function "customError" not found or invalid function name in /var/www/vhosts/makinaelemanlari.com/httpdocs/App/Core/Config.php:70 Stack trace: #0 /var/www/vhosts/makinaelemanlari.com/httpdocs/App/Core/Config.php(70): set_error_handler() #1 /var/www/vhosts/makinaelemanlari.com/httpdocs/App/Core/Config.php(36): Config->configureErrorReporting() #2 /var/www/vhosts/makinaelemanlari.com/httpdocs/index.php(9): Config->__construct() #3 {main} thrown in /var/www/vhosts/makinaelemanlari.com/httpdocs/App/Core/Config.php on line 70