[bug] Kibana initial configuration : "Configure an index pattern"

[NG-GOM]

Summary

After a fresh install of the platform and its dependencies, Kibana asks to "Configure an index pattern".

This shall be managed either by the platform or explicitly explained in the installation documentation.

Details

I created a project and added a metric to it.
After successfully testing and executing the metric (thus have collected data), I configured a visualisation on it through the platform.
The visualisation display didn't work ; Kibana has shown me an error message, asking me to configure an "index pattern".

Workaround

I came on the Kibana interface and declared the "postDate" field as a "Time-field name".
This has corrected the problem and let the visualisation work.