Notice: Undefined index: key in /var/www/ on line 3

Fatal error: Uncaught SoapFault exception: [a:DeserializationFailed] The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter The InnerException message was 'There was an error deserializing the object of type System.Guid. The value '' cannot be parsed as the type 'Guid'.'. Please see InnerException for more details. in /var/www/ Stack trace: #0 /var/www/ SoapClient->__soapCall('GetLeaseDetails', Array) #1 /var/www/ wc_service('<GetLeaseDetail...', 'GetLeaseDetails') #2 /var/www/ getLeaseDetails('') #3 /var/www/ include('/var/www/') #4 /var/www/ require_once('/var/www/ in /var/www/ on line 158