Missing flag for Réunion

A flag picture displayed for country resolution next to ISO code does not display correctly for Réunion. Proof: https://mentat-hub.cesnet.cz/mentat/events/10372-PDNS-22203-2022027-133-CRYPTO-29158-11521-30578/show
The link seems to be correctly formated: https://mentat-hub.cesnet.cz/mentat/static/images/country-flags/flags-iso/shiny/16/RE.png , so the file is probably missing.