Kea dhcp static mapping

[caplam]

Hi,
I'm new to opnsense so I have my all network to migrate.
I started with Kea as isc is mentionned for being soon deprecated.
I tried with no success to import dhcp static mapping from my actual router.
File is a csv with the same Fields as in the configuration screen.
I tried many times with or without the first line.
I have « unexpected error se the logs « 
But no error is shown in the logs.
Is this import thing working?
Un the mean time I deactivated Kea to start isc and I will make registrations from the leases page.