Try to add new netserver in GUI (127.0.0.1:8000) and get error
Error rpc error: code = Unknown desc = object already exists (code: 2)
Either it already exists, or you did register the LoRa App Server instance before, flushed the LoRa App Server database and tried to re-register. In that case it doesn’t work as LoRa Server still has a reference to the “old” LoRa App Server inside the routing_profile database table.
Thank you, issue resolved
Could you share how you solved it for reference, in case other people will have the same issue in the future?
because save of the data did not bother me, I have chosen simplest way - re-init databases