Warning: require_once(../../../core/91/class.resolver.php): failed to open stream: No such file or directory in /var/www/projects/www/test/smtp_mg.php on line 27

Fatal error: require_once(): Failed opening required '../../../core/91/class.resolver.php' (include_path='.:/usr/share/php') in /var/www/projects/www/test/smtp_mg.php on line 27