TypeError: redeclaration of let filter

In the Mongo shell when I enter:
let filter = {title: “House, M.D., Season Four: New Beginnings”}
I get the error above ???

Make sure when you copy & paste from word doc quotes are coming

MongoDB Enterprise Cluster0-shard-0:PRIMARY> let filter = {“title”: “House, M.D., Season Four: New Beginnings”}
MongoDB Enterprise Cluster0-shard-0:PRIMARY> filter
{ “title” : “House, M.D., Season Four: New Beginnings” }
MongoDB Enterprise Cluster0-shard-0:PRIMARY>