Install ChirpStack MQTT Forwarder on RAK7268V2

Hello,
Hope that all of you are doing well.
I try to install ChirpStack MQTT Forwarder on RAK7268V2 but it shows this error.
Could you please help?
Thank you in advance for your support.
Best regards.

root@RAK7268CV2:/tmp# wget https://artifacts.chirpstack.io/downloads/chirpstack-
mqtt-forwarder/vendor/rak/mipsel_24kc/chirpstack-mqtt-forwarder_4.3.0-r1_mipsel_
24kc.ipk
Downloading ‘https://artifacts.chirpstack.io/downloads/chirpstack-mqtt-forwarder/vendor/rak/mipsel_24kc/chirpstack-mqtt-forwarder_4.3.0-r1_mipsel_24kc.ipk
Failed to send request: Operation not permitted