Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 33 in /var/www/html/ElectronicInvoice/config/Conexion.php:17 Stack trace: #0 /var/www/html/ElectronicInvoice/config/Conexion.php(17): mysqli->query() #1 /var/www/html/ElectronicInvoice/modelos/creditNotes.php(156): ejecutarConsulta() #2 /var/www/html/ElectronicInvoice/ajax/sendCreditNotes.php(15): CreditNotes->ProcesoFactura() #3 {main} thrown in /var/www/html/ElectronicInvoice/config/Conexion.php on line 17