Fatal error: Uncaught Error: Call to a member function query() on null in /var/www/html/php/busqueda_ultimos_id.php:8 Stack trace: #0 /var/www/html/php/busqueda_ultimos_id.php(11): consultaConceptos() #1 {main} thrown in /var/www/html/php/busqueda_ultimos_id.php on line 8