Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DataCollector\DataCollector' not found in /home/noct-c/www/tanakahashi/vendor/symfony/http-kernel/DataCollector/AjaxDataCollector.php:22 Stack trace: #0 {main} thrown in /home/noct-c/www/tanakahashi/vendor/symfony/http-kernel/DataCollector/AjaxDataCollector.php on line 22