java.io.CharConversionException: Malformed UTF-8 character: 0xe9 0x65 0x20

Hi

I have a wcf service that i can browser (image svcService).

When I try to add WSDL with soapUI version 

I always receive the error: Error loading [https://swebu24.dev.interne/Sirf/SirfNet/SW_05_06/SW_05_06_ObtenirHyperlienLot.svc?wsdl]: org.apache.xmlbeans.XmlException: java.io.CharConversionException: Malformed UTF-8 character: 0xe9 0x65 0x2

I already select the option Adds authentication information to outgoing request

and I already add the line -Dfile.encoding=UTF8 in the file SoapUI-5.5.0.vmoptions

Also I check that the credentials username, password and domains are right

Can somebody help me???

What can i do?