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 ') AND ((ventas.id_venta_tipo)=)) GROUP BY ventas.anio ORDER BY ventas.anio DESC' at line 1 in C:\xampp\htdocs\intranet_api\database.php:75 Stack trace: #0 C:\xampp\htdocs\intranet_api\database.php(75): mysqli_query(Object(mysqli), 'SELECT ventas.a...') #1 C:\xampp\htdocs\intranet_api\clases\listados_ventas.php(425): database->query() #2 C:\xampp\htdocs\intranet_api\ventas\listado_anio_ventas.php(15): listados_ventas->crear_json_anio_ventas(NULL, NULL) #3 {main} thrown in C:\xampp\htdocs\intranet_api\database.php on line 75