Cant connect to cluster/server

cant connect to server/cluster . It is saying “2019-01-11T13:35:53.633-0500 E QUERY [js] SyntaxError: missing ; before statement @(shell):1:6”

In the lecture notes, it says when this happens " You need to run the command from your command-line interface"

what is command-line interface?

What command you ran?Please paste the command or screen shot
Sometimes if you run commands at mongo prompt which are meant to be run at os command prompt you get those type of errors
Command line interface is your os prompt

os prompt:
C:\Users\ramrt>mongo mongodb://,, --authenticationDatabase admin --ssl --username m001-student --password m001-mongodb-basics

mongo prompt:

MongoDB Enterprise Cluster0-shard-0:PRIMARY> db