Warning: Undefined array key "id" in C:\Apache24\htdocs\soitec\xml\xmlgridlistacad50_1.php on line 4

Fatal error: Uncaught Error: Call to a member function query() on null in C:\Apache24\htdocs\soitec\persistencia\GacgraDAO.php:90 Stack trace: #0 C:\Apache24\htdocs\soitec\xml\xmlgridlistacad50_1.php(18): GacgraDAO->listaCad50_1() #1 {main} thrown in C:\Apache24\htdocs\soitec\persistencia\GacgraDAO.php on line 90