Can't validate_lab1.js (last step of M040 --> Lab: Start Up a Replica Set

I got to the final part of the homework but it seems after I start my mongod (which queries c:\data) and I run my validate.js I get this eror:

D:\m040-vagrant-env\shared>mongo --quiet validate_lab1.js
2018-10-26T16:12:39.724-0700 E QUERY [js] Error: Could not retrieve replica set config: {
“ok” : 0,
“errmsg” : “not running with --replSet”,
“code” : 76,
“codeName” : “NoReplicationEnabled”
} :
rs.conf@src/mongo/shell/utils.js:1448:11
@validate_lab1.js:24:12
failed to load: validate_lab1.js

It appears the script was not able to retrieve the replica set config. As I recall I created three replicas ({1,2,3}). I am not sure how to proceed from here. Any input would be greatly appreciated.