Fatal error: Uncaught Error: Class 'Nelmio\SecurityBundle\EventListener\AbstractContentTypeRestrictableListener' not found in /home/eberhardschwarze/public_html/vendor/nelmio/security-bundle/EventListener/ContentSecurityPolicyListener.php:28
Stack trace:
#0 {main}
thrown in /home/eberhardschwarze/public_html/vendor/nelmio/security-bundle/EventListener/ContentSecurityPolicyListener.php on line 28