Object Does Not Exist(Code:5) When adding new device

When i add a new device to server, server return object does not exist. Before updated the loraserver and lora-app-server, i did not get this error. I see in forum this is a bug in new version and bug fixed. But i try sudo apt-get install lora-app-server, command return to me “lora-app-server already newest version (3.3.1), 0 upgraded, 0 newly installed, 0 to remove, and 62 not upgraded” How can i solve this problem?

Have you tried “sudo apt-get update”?

Yes i tried it. I downgraded lora-app-server now.