What to put in Run/Debug Configurations settings of Grails?

please check https://www.jetbrains.com/help/idea/getting-started-with-grails3.html

@Petr Rastegaev, I saw that help page 2 days ago.
It's not helpful enough. Because:

1. The tutorial is based on Grails 3.0 setup, which is like a year old. I am trying to use the update lastest stable Grails 4.0.

2. The Tutorial setup is completely based on completely who Mac OS works. Not on how Linux distros work.

I even install Gradle according to the tutorial, which was a bit unnecessary. 
I doubt that tutorial is even a bit helpful anyone who use Linux distro.
Mine is Ubuntu 19.04. 

Its seems to easy. But it's not. 

Update the tutorial, Peter. For Linux user too.
Help me if u know who to deal with this.

We will update the tutorial, regarding the problem - you need to set "Application" field, which is currently set to "none".

I will be looking forward to it.