Hello everyone I am new to this. I am using RAK831 Gateway and raspberry pi3 B version for gateway communication.

I have used RAK831-Raspberry-Pi3-Gateway-&-RAK811-LoRaNode-User-Manual.pdf and try to make gateway online but after entering " sudo ./start.sh"

This command it shows error
"ERROR: local_conf.json is not a valid JSON file"

I dont know what to do. please help!

Thanks ...