Dragino LPS8V2 couldn't setup MQTT forwarder(OPKG error)

Hi. I am using Dragino LSP8v2 Gateway, and I am using Chirpstack network server. I am trying to integrate forward the data using MQTT forwarder and so, I followed this link https://www.chirpstack.io/docs/chirpstack-mqtt-forwarder/install/dragino.html. But I couldn’t install the package using OPKG. It shows that OPKG command not found, and I tried to install it, and it doesn’t work. I am just using the gateway with the default Image, and I also updated the gateway.

Has anyone faced this issue?

Could you copy and paste the complete command that you are executing + the output?