Sunstone: unable to switch zone in sunstone

Hi. I’ve just setup federation following this documentation “https://docs.opennebula.org/5.6/advanced_components/data_center_federation/federationconfig.html#”.
I am able to switch zones from the CLI and i’m able to see hosts within each zones. But when I try to switch zone from sunstone (in the MASTER zone) to the slave zone, it simply reload with the master zone. No errors given


Versions of the related components and OS (frontend, hypervisors, VMs):
opennebula 5.6.1
centos 7

This is related to https://github.com/OpenNebula/one/issues/1552
Adding “underscores_in_headers on;” to my nginx config fixed the issue.

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