Shard a Collection

I am unable to rectify what’s happening.

Is your mongos up?
It failed to start.Investigate why it errored
Run without fork option as suggested in the error message or check mongos.log

mongos failed to start because it is already running. i think this is mentioned i the lab instructions. the error message is clear

Did you shard m103.products …

… collection using the correct shard key?