Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'n??H??'' at line 1 in /var/www/html/public_html/class/classDb.php:503 Stack trace: #0 /var/www/html/public_html/class/classDb.php(503): mysqli->query() #1 /var/www/html/public_html/class/classDb.php(523): Database->execute() #2 /var/www/html/public_html/function.php(3174): Database->fetch() #3 /var/www/html/public_html/download-certificate.php(26): agent_details() #4 {main} thrown in /var/www/html/public_html/class/classDb.php on line 503