I install prometheus, it gives an error, I don't know what to do?

Question

linux

I install swarmprom from github https://github.com/stefanprodan/swarmprom
I reached the step It gives an docker stack deploy -c docker-compose.yml mon
error:

Answer 1

Before that, you need to install Swarm:
Prerequisites:
Swarm cluster with one manager and a worker node

Answer 2

so you put prometheus or swarmmon? And why?