WARNING(2): "count(): Parameter must be an array or an object that implements Countable"

WARNING(2): "Cannot modify header information - headers already sent by (output started at /var/www/aci3470/htdocs/shop/gm/classes/ErrorHandler.php:419)"

WARNING(2): "Cannot modify header information - headers already sent by (output started at /var/www/aci3470/htdocs/shop/gm/classes/ErrorHandler.php:419)"

WARNING(2): "Cannot modify header information - headers already sent by (output started at /var/www/aci3470/htdocs/shop/gm/classes/ErrorHandler.php:419)"