Labs: Docker Service

I am getting an error while creating a docker services with replicas:3.
Error : Error creating external connectivity network.
Can you please brief what is the error and how to resolve it.
Note: I tried with the command from hint. still throwing the same error.

Hello, @Harish.Reddivari
It will retry to get success. Try again it will work.

Hello @player001
I tried again. I waited for half n hr, but the result is same(still the same error).