log: We've discovered an unknown Broadlink device. This likely won't cause any issues.
Please raise an issue in the GitHub repository (https://github.com/kiwi-cam/homebridge-broadlink-rm/issues) with details of the type of device and its device type code: "520b". The device is connected to your network with the IP address "192.168.XX.XXX".

I cannot use the learn IR function with error code "[ERROR] Learn Code (Couldn't learn code, device not found)"

My device is RM4Pro. 
Please help thanks