Fatal error: Uncaught Error: Call to a member function query() on null in C:\Apache24\htdocs\soitec\persistencia\RotaDAO.php:196 Stack trace: #0 C:\Apache24\htdocs\soitec\src\frmgetpesorota.php(6): RotaDAO->getPesoTotalRota() #1 {main} thrown in C:\Apache24\htdocs\soitec\persistencia\RotaDAO.php on line 196