Fatal error: Uncaught Error: Class 'Concrete\Core\Error\ErrorList\Formatter\AbstractFormatter' not found in /home/geofieldwa/www/concrete/src/Error/ErrorList/Formatter/JsonFormatter.php:7 Stack trace: #0 {main} thrown in /home/geofieldwa/www/concrete/src/Error/ErrorList/Formatter/JsonFormatter.php on line 7