Fatal error: Uncaught SoapFault exception: [soapenv:Server.userException] java.lang.NullPointerException in /home/gr2/public_html/ws/Conexao.php:37 Stack trace: #0 /home/gr2/public_html/ws/Conexao.php(37): SoapClient->__soapCall('listarDerivados', Array, Array) #1 /home/gr2/public_html/ws/ws.php(8): Conexao->listarDerivados('5d8f94598af1b51...') #2 /home/gr2/public_html/produtos.php(4): WS->listarDerivados() #3 {main} thrown in /home/gr2/public_html/ws/Conexao.php on line 37