Fatal error: Uncaught Error: Call to a member function query() on null in C:\Apache24\htdocs\soitec\persistencia\ProducaoDAO.php:720 Stack trace: #0 C:\Apache24\htdocs\soitec\src\divvariaveislaudo.php(14): ProducaoDAO->listaPrdvar() #1 {main} thrown in C:\Apache24\htdocs\soitec\persistencia\ProducaoDAO.php on line 720