[SOS] Warning about Lora Gateway Bridge

Hello, I installed LoRa Gateway Bridge in Raspberry well, but got a warning while running:
[gateway: configuration was not applied, gateway is not configured for managed configuration]
What does it mean ? Should I ignore it ?

The complete LOG is as follows:
● lora-gateway-bridge.service - LoRa Gateway Bridge
Loaded: loaded (/lib/systemd/system/lora-gateway-bridge.service; enabled; vendor preset: enabled)
Active: active (running) since Thu 2018-12-20 19:06:27 GMT; 3min 48s ago
Docs: https://www.loraserver.io/
Main PID: 477 (lora-gateway-br)
CGroup: /system.slice/lora-gateway-bridge.service
└─477 /home/pi/lora_gateway/bin/lora-gateway-bridge

Dec 20 19:08:49 LoGW lora-gateway-bridge[477]: time=“2018-12-20T19:08:49Z” level=info msg=“backend: config packet received” topic=gateway/3133383159005300/config
Dec 20 19:08:49 LoGW lora-gateway-bridge[477]: time=“2018-12-20T19:08:49Z” level=warning msg=“gateway: configuration was not applied, gateway is not configured for managed configuration” mac=3133383159005300
Dec 20 19:09:19 LoGW lora-gateway-bridge[477]: time=“2018-12-20T19:09:19Z” level=info msg=“gateway: stat packet received” addr=“127.0.0.1:50663” mac=3133383159005300
Dec 20 19:09:19 LoGW lora-gateway-bridge[477]: time=“2018-12-20T19:09:19Z” level=info msg=“backend: publishing packet” qos=0 topic=gateway/3133383159005300/stats
Dec 20 19:09:19 LoGW lora-gateway-bridge[477]: time=“2018-12-20T19:09:19Z” level=info msg=“backend: config packet received” topic=gateway/3133383159005300/config
Dec 20 19:09:19 LoGW lora-gateway-bridge[477]: time=“2018-12-20T19:09:19Z” level=warning msg=“gateway: configuration was not applied, gateway is not configured for managed configuration” mac=3133383159005300
Dec 20 19:09:49 LoGW lora-gateway-bridge[477]: time=“2018-12-20T19:09:49Z” level=info msg=“gateway: stat packet received” addr=“127.0.0.1:50663” mac=3133383159005300
Dec 20 19:09:49 LoGW lora-gateway-bridge[477]: time=“2018-12-20T19:09:49Z” level=info msg=“backend: publishing packet” qos=0 topic=gateway/3133383159005300/stats
Dec 20 19:09:49 LoGW lora-gateway-bridge[477]: time=“2018-12-20T19:09:49Z” level=info msg=“backend: config packet received” topic=gateway/3133383159005300/config
Dec 20 19:09:49 LoGW lora-gateway-bridge[477]: time=“2018-12-20T19:09:49Z” level=warning msg=“gateway: configuration was not applied, gateway is not configured for managed configuration” mac=3133383159005300

Oh…Server want manage packet_forwarder, so, configure it in .toml.

Sorry, but this is not the way to create topic titles.