Fatal error: Uncaught Error: Class "Symfony\Bundle\FrameworkBundle\Controller\AbstractController" not found in /home/gujjerji/public_html/support/vendor/uvdesk/support-center-bundle/Controller/KnowledgebaseXHR.php:14 Stack trace: #0 {main} thrown in /home/gujjerji/public_html/support/vendor/uvdesk/support-center-bundle/Controller/KnowledgebaseXHR.php on line 14