HTTP Status 500 in php java bridge!!

[pritam insync]

I am using php-java bridge to access the methods of a java file from the comand prompt every thing works fine but when i try to run this script in an yweb browser I get
type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.S ervletException : Servlet.init() for servlet PhpJavaServ in /java/Java.inc on line 520



The code---->

<?php

$amount=10;
$trackid='111111111';
require_once("/java/Java.inc");
java_require('/home/zyx/public_html/Test/');
$pipe = new Java("Payment");
//$amount = 100;
$pipe->setCurrency("37756");
$pipe->setLanguage("USA");
$pipe->setAction("1");
$pipe->setResponseURL("https://www.xyz.in/intermediate.php");
$pipe->setErrorURL("https://www.xyz.in/failure.php");
$pipe->setResourcePath('/home/zyx/public_html/Test/');
$pipe->setAlias("26788");
$pipe->setAmt($amount);
$pipe->setTrackId($trackid); 
echo $status = $pipe->performPaymentInitialization();


$payID = $pipe->getPaymentId();
$payURL = $pipe->getPaymentPage();
$urlToRedirect = $payURL . '?PaymentID=' . $payID;
echo $urlToRedirect;
//header('Location: '. $urlToRedirect);
$urlToRedirect="http://www.google.com/";
header('Location: '. $urlToRedirect);
?>

I dont know why I am getting this error plz help