com.sapportals.portal.prt.runtime.PortalRuntimeException: iView not found: irj.default

Hi experts,

Im getting above error on executing a java script function ,  In this function im using ajax code to read a text file

xmlhttp.open("GET", "irj/portalapps/Dynpage/logger/Value", true);

xmlhttp.send();

xmlhttp.onreadystatechange = changeValue;

here Dynpage is my jspdynpage component and logger is the folder at PortaL-Inf , ChangeValue is another java script function which changes the value of a text inside the jsp  and that function is as shown below.

function changeValue()

{

if (xmlhttp.readyState==4

&& xmlhttp.status==200) 

{

document.getElementById("myDiv").innerHTML=xmlhttp.responseText;

}

here the xmlhttp status im getting it as 500 , and im not able to get the response text and in turn above error is getting logged at default trace.

please help me to solve the issue.

Regards

Govardan Raj S