Internal Server Error when runnig my client

[Akacem Mohammed]

Hello evry body there,

I got the following exception when runniny my client. I have apache und tomcat 4.0.4 
installed. I checked that my service is deployed. 

Exception in thread "main" Internal Server Error
        at org.apache.axis.transport.http.HTTPSender.invoke(HTTPSender.java:518)

HER I S MY CLIENT CODE :
package de.ba.test;

//import org.apache.axis.Client.ServiceClient;

public class Client2
{
        public static void main( String [] args) throws Exception
        {
         de.ba.test.HelloMohammed binding= new 
de.ba.test.HelloMohammedServiceLocate().getHelloMohammed()
                        
        String message= "it didn't work";
        (  (HelloMohammedSoapBindingStub) binding).sayHelloTo (args[0], message);
        System.out.println(message);
                        
                }
}

thanks for any help

Mohammed