Extract text or runtime exceptions from “Run” window

Question

I want to build an Intellij IDEA plugin to read text output or extract runtime exceptions from “Run” window.

 

I followed in many topics , official documentation and i ve tried with code implemented in this article

https://intellij-support.jetbrains.com/hc/en-us/community/posts/203361530-Read-text-from-Run-window?page=1#community_comment_203903244

but i doesn't work even though my purpose is simple " just capture text or runtime exception from Run window "