Fatal error: Uncaught Error: Interface "OCP\Security\IContentSecurityPolicyManager" not found in /users/ms-it/www/oc/lib/private/Security/CSP/ContentSecurityPolicyManager.php:28 Stack trace: #0 {main} thrown in /users/ms-it/www/oc/lib/private/Security/CSP/ContentSecurityPolicyManager.php on line 28