getTestReport() throwing org.apache.http.client.HttpResponseException:

I am using java-client-api version 0.3.8 and Jenkins Version 2.8. I looked issues #156 , #89 but no use i am always getting org.apache.http.client.HttpResponseException: Not Found

Below is the code i am trying:
MavenJobWithDetails mavenJob = js.getMavenJob("GOA_Dashboard_Test");
BuildWithDetails details = mavenJob.getBuilds().get(0).details();
System.out.println("Build Number: " + details.getNumber());//i am getting number of latest build here
TestReport testReport = mavenJob.getBuilds().get(0).getTestReport();//getting error here

Also i tried
JenkinsTriggerHelper triggerHelper = new JenkinsTriggerHelper(js);
BuildWithDetails build = triggerHelper.triggerJobAndWaitUntilFinished("GOA_Dashboard_Test",params,true);
System.out.println("RESULT: "+build.getResult());
System.out.println("build Info: "+build.getTestReport());//getting error here

Please suggest me where i am doing mistake?
Thank You.

Start by tracing the getTestReport() calls from MavenJobWithDetails and BuildWithDetails, then compare them with the Jenkins job and build created through JenkinsTriggerHelper. Check the request that produces HttpResponseException: Not Found and verify whether the build exposes a test report. Done means the cause of the 404 is identified and the behavior or usage is clarified with a reproducible test or documented condition.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.