TestNG Reporter org.testng.reporters.JUnitReportReporter@7a79be86 failed java.util.ConcurrentModificationException
<p>I'm new to TestNG framework, I have written script for an application using TestNG framework. Script working fine but yet I'm getting an error at the end of console. Error attached. 
Please anyone can help me.
Thanks in advance.<a href="https://i.stack.imgur.com/XlgIF.png" rel="noreferrer">enter image description here</a></p>