Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DataCollector\AjaxDataCollector' not found in /home/phprplacein/public_html/vendor/symfony/framework-bundle/DataCollector/AjaxDataCollector.php:25 Stack trace: #0 {main} thrown in /home/phprplacein/public_html/vendor/symfony/framework-bundle/DataCollector/AjaxDataCollector.php on line 25