Fatal error: Uncaught Error: Interface "Espo\Core\Acl\LinkChecker" not found in C:\xampp\htdocs\application\Espo\Classes\Acl\Email\LinkCheckers\ParentLinkChecker.php:42 Stack trace: #0 {main} thrown in C:\xampp\htdocs\application\Espo\Classes\Acl\Email\LinkCheckers\ParentLinkChecker.php on line 42