Not able to display services list in terminal: Docker

Going through Part 3 tutorial of Docker’s Getting Started.

I was able to run the load balanced app with 5 instances using the command
docker stack deploy -c docker-compose.yml getstartedlab

$ docker stack deploy -c docker-compose.yml getstartedlab
top-level network "webnet" is ignored
service "web": network "webnet" is ignored
Waiting for the stack to be stable and running...
web: Ready		[pod status: 5/5 ready, 0/5 pending, 0/5 failed]

But, when I try to list the services with command docker service ls it does not show any data.

$ docker service ls
ID   NAME   MODE   REPLICAS   IMAGE   PORTS

Am I doing something wrong here. Could anyone please guide me?