Unable to sudo apt-get install lora-gateway-bridge

I am trying to install lora-gateway-bridge in my my raspi by using command :
sudo apt-get install lora-gateway-bridge

However it shows as follows

Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package lora-gateway-bridge

Looks like the repos server has problem ?

Did you follow the Debian Ubuntu repository instructions: https://docs.loraserver.io/lora-gateway-bridge/overview/downloads/?

Hi k30r88,

What OS do you use?

ok thanks for your reply, now we are able to install the bridge on raspi