Error while using reportsonly attribute

Hi All,
I am trying to use reportsOnly option in gatling engine class , but I am running through an exception as below.

Exception in thread “main” java.lang.IllegalArgumentException: Unknown object coding: 60

can anybody help me out to resolve issue

Thanks in advance … !

Akshay Paturkar
C: 8125727619

can you post the command that you ran?

I am running Engine class with passing directory containing simulation.log like aggregate (dir name) as below.
Val props = new GatlingPropertiesBuilder
Props.reportOnly (“aggregate”)
Gatling.fromMap (

This way I am trying to achieve it was running previously as expected but now I m running into exception.