why there is an error message when I use matlab.wsd​l.createWS​DLClient()​?

There is an error message as below when I use matlab.wsdl.createWSDLClient().

But for the same url, it does not happen make error when I use createClassFromWsdl().

I don't know why? Pls help me.

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Error using matlab.internal.callJava

No method sPSLTWIPPRDINSN exists in Java class com.sun.proxy.$Proxy47

Error in RCAT/SP_SLTWIPPRDINSN (line 179)

ret =

matlab.internal.callJava('sPSLTWIPPRDINSN',obj.PortObj,fromMATLAB({'SP_SLTWIPPRDINSN','I_ACESN'},

I_ACESN,'string',true,false));

Error in untitled (line 36)

tp_model=SP_SLTWIPPRDINSN(obj1,SN);

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