Not able to received Link margin data on LoraServer

@velev @ZhuQI @Fomi
Hardware - RPi 3B+ and RAK833 SPI
Firmware - https://downloads.rakwireless.com/en/LoRa/RAK2245-Pi-HAT/Firmware/
Server - LoraServer
Link margin data has not seen on LoraServer.I know that there is a problem with scripts.
We can test it.

This is image is not upgraded to ChirpStack yet. Soon it will be. So please install from here https://github.com/RAKWireless/rak_common_for_gateway
This is our latest firmware including new ChirpStack (known as LoRaServer)
Also give the settings of end devices, ADR, ch, etc.