* as openstack entities work with entity names it has troubles with migration of networks/subnets/routers with empty name (``)
* trigered by [job#1560463](https://gitlab.ics.muni.cz/cloud/g1-g2-ostack-cloud-migration/-/jobs/1560463).
* as workaround feel free to change names in G1 OpenStack cloud for instance `openstack subnet set --name "FormR - Subnet" 3aafeb98-b4cb-4b42-9842-be9e2b1e4d6e` and re-run the migration