Hi @Marco_Liberati,
I have followed you example, from the link Gantt chart on Kibana using version 7.11 - #3 by bab .
I have modified the fields accordingly (see screenshot below):
Unfortunately I get 'Infinite extent for field' error for both StartDate and EndDate.
Do you have any idea why? I am of course looking into debugging this on my own in the meantime.
If successful, I will share the solution.
With regards,
Kamil