Kibana Failed to load indices

[Christophe_Journel (Chris)]

Hello.
When i upgraded Kibana ( and the whole elk stack from 7.4.1 to 7.5.1), everything went fine. Except that now i cannot create a new index pattern

The developper console shows:

What can i do ? I already tried to execute this command in dev tool

The first one:

And another command:

Thanks for yor help

[Christophe_Journel (Chris)]

Hello.
Figured it out. A huge number of Spark threads updating the same document with a refresh_interval set to 1sec... This was a misconfiguration where the elasticsearch document_id was supposed to be different. Therefore instead of creating a huge number of different douments in ES, the cluster tried to update only one.

=> A huge number of refresh broke down the whole cluster, and that is why this query failed.