Issue running Loraserver on CentOS

Hi!
Im having a bit of trouble configuring Loraserver on CentOS. I was using [this example](https://forum.loraserver.io/t/lora-server-installation-on-centos/1256/5), but I noticed some problems. Everything from gateway bridge to app server seems to be running, but not properly. I have added all necessary profiles and Im trying to add actual gateway but I receive error ‘object doesn`t exist’, app server log shows this:
Sep 27 16:28:25 hostname lora-app-server[15345]: time=“2019-09-27T16:28:25+03:00” level=info msg=“gateway created” mac=323433362e006d00 name=323433362E006D00
Sep 27 16:28:25 hostname lora-app-server[15345]: time=“2019-09-27T16:28:25+03:00” level=info msg=“finished client unary call” error=“rpc error: code = NotFound desc = object does not exist” grpc.code=NotFound grpc.method=CreateGateway grpc.service=ns.NetworkServerService grpc.time_ms=3.163 span.kind=client system=grpc
Sep 27 16:28:25 hostname lora-app-server[15345]: time=“2019-09-27T16:28:25+03:00” level=info msg=“finished unary call with code NotFound” error=“rpc error: code = NotFound desc = object does not exist” grpc.code=NotFound grpc.method=Create grpc.service=api.GatewayService grpc.start_time=“2019-09-27T16:28:25+03:00” grpc.time_ms=17.831 peer.address="[::1]:33812" span.kind=server system=grpc
I am using 3.3.0 lora-gateway-bridge, 3.3.0 loraserver (yes, I noticed that it is a test version) and 3.3.0 lora-app-server. What could be causing this?