java.lang.IllegalArgumentException: The char ‘0x0‘ after ‘return code: 500

 上传oa审批流程报错，谁能指导下

已解决，生成xml的时候，流程发起人换了个账号就好了，猜测可能是我登陆的账号没有权限什么的

错误是在org.apache.axis.client.Call.invoke()这一行产生报错的

public java.lang.String addReview(com.zz.zzsrm.api.webService.util.KmReviewParamterForm arg0) throws java.rmi.RemoteException, com.zz.zzsrm.api.webService.util.Exception {
    if (super.cachedEndpoint == null) {
        throw new org.apache.axis.NoEndPointException();
    }
    org.apache.axis.client.Call _call = createCall();
    _call.setOperation(_operations[0]);
    //设置是否使用SoapAction
    _call.setUseSOAPAction(true);
    _call.setSOAPActionURI("");
    _call.setEncodingStyle(null);
    _call.setProperty(org.apache.axis.client.Call.SEND_TYPE_ATTR, Boolean.FALSE);
    _call.setProperty(org.apache.axis.AxisEngine.PROP_DOMULTIREFS, Boolean.FALSE);
    _call.setSOAPVersion(org.apache.axis.soap.SOAPConstants.SOAP11_CONSTANTS);
    //设置远程调用类中的方法
    _call.setOperationName(new javax.xml.namespace.QName("${地址}", "${调用方法名称}"));

    setRequestHeaders(_call);
    setAttachments(_call);
    try {
        java.lang.Object _resp = _call.invoke(new java.lang.Object[]{arg0});

        if (_resp instanceof java.rmi.RemoteException) {
            throw (java.rmi.RemoteException) _resp;
        } else {
            extractAttachments(_call);
            try {
                return (java.lang.String) _resp;
            } catch (java.lang.Exception _exception) {
                return (java.lang.String) org.apache.axis.utils.JavaUtils.convert(_resp, java.lang.String.class);
            }
        }
    } catch (org.apache.axis.AxisFault axisFaultException) {
        if (axisFaultException.detail != null) {
            if (axisFaultException.detail instanceof java.rmi.RemoteException) {
                throw (java.rmi.RemoteException) axisFaultException.detail;
            }
            if (axisFaultException.detail instanceof com.zz.zzsrm.api.webService.util.Exception) {
                throw (com.zz.zzsrm.api.webService.util.Exception) axisFaultException.detail;
            }
        }
        throw axisFaultException;
    }
}