Unable to start mongos for lab 3.1

Below is the configuration file I am using for mongos

sharding:
  configDB: csrs/localhost:27004,localhost:27005,localhost:27006
security:
  keyFile: /var/mongodb/pki/m103-keyfile
net:
  bindIp: localhost
  port: 26000
systemLog:
  destination: file
  path: /var/mongodb/logs/mongos.log
  logAppend: true
processManagement:
  fork: true

and then I have use the command mongos -f mongos.conf but when I login into the mongos system, as shown below in the output, there is no entry in the active mongoses as shown in the video

sh-4.4# mongo --port 26000 -u "m103-admin" -p "m103-pass" --authenticationDatabase "admin"
MongoDB shell version v4.0.5
connecting to: mongodb://127.0.0.1:26000/?authSource=admin&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("c4b1b747-c6b6-4c44-9c4a-77c43464fd09") }
MongoDB server version: 4.0.5
Server has startup warnings: 
2020-08-27T00:33:19.880+0000 I CONTROL  [main] ** WARNING: You are running this process as the root user, which is not recommended.
2020-08-27T00:33:19.880+0000 I CONTROL  [main] 
mongos> sh.status()
--- Sharding Status --- 
  sharding version: {
        "_id" : 1,
        "minCompatibleVersion" : 5,
        "currentVersion" : 6,
        "clusterId" : ObjectId("5f46fcb12341146364021727")
  }
  shards:
  active mongoses:
  autosplit:
        Currently enabled: yes
  balancer:
        Currently enabled:  yes
        Currently running:  no
        Failed balancer rounds in last 5 attempts:  0
        Migration Results for the last 24 hours: 
                No recent migrations
  databases:
        {  "_id" : "config",  "primary" : "config",  "partitioned" : true }

mongos> exit
bye
sh-4.4# ls
mongos.conf
sh-4.4#

Any leads would be appreciated.

It should show even without shards added
Try to logout and login and see

or check db.printShardingStatus()