Can't call method "extraConfig" on an undefined value at ./script.pl line 3584.

REQUEST: $VAR1 = '<?xml version="1.0" encoding="UTF-8"?>
   <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
                     xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <soapenv:Body>
<Logout xmlns="urn:vim25"><_this type="SessionManager">SessionManager</_this>
</Logout></soapenv:Body></soapenv:Envelope>
';

RESPONSE: $VAR1 = '<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
 xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body>
<LogoutResponse xmlns="urn:vim25"></LogoutResponse>
</soapenv:Body>
</soapenv:Envelope>';