Testng reports is not generating.

[Anas Ansari]

I've a pipeline job which is used to hit an API that returns a response in json format. I want to use jenkins testng result plugin to show that json into

testng report. So that i've made a file name "testng-results.xml" and put that file into workspace location, when i build the job i got following error.

TestNG Reports Processing: START

Looking for TestNG results report in workspace using pattern: **/testng-results.xml
testng-results.xml was last modified before this build started. Ignoring it.
Saving reports...
Found matching files but did not find any TestNG results.

please help.