RAK2247-USB Not Shown as a USB Device when Plugged into RPI 4

Issue:RAK2247-USB Not Shown as a USB Device when Plugged into RPI 4

Setup: Raspberry Pi 4+

Server: Chirpstack API

Details: When I ran the packet forwarder executable compiled by this repository (rak_common_for_gateway/lora/rak2247_usb at master · RAKWireless/rak_common_for_gateway · GitHub), an error occurred: ERROR: [main] failed to start the concentrator.

I tried ran the usb device listing command and found out it is not shown there. I used the Official PSU, USB-C, 5.1V, 3A, US Plug so there shouldn’t powering issue.

Does anyone have similar issue? I would greatly appreciate any help! Thanks