In Minute 5: StdLib Service Creation

I cannot run command

lib .command.hello test general “hey there from CLI”

or

.command.hello test general “hey there from CLI”

[LocalGateway] (GLOBAL)
*** Listening on port 8170
[LocalGateway] (2b72fbf0) localhost:8170/lockevn/slack-app/command/hello/
::: Request Received (Size 39)
[LocalGateway] (2b72fbf0) localhost:8170/lockevn/slack-app/command/hello/
<!> ClientError: “command/hello” Not Found
[LocalGateway] (2b72fbf0) localhost:8170/lockevn/slack-app/command/hello/
>>> {“error”:{“type”:”ClientError”,”message”:”\”command/hello\” Not Found”}}
Error: “command/hello” Not Found

Except that, I can publish to live site and the bot works normally. Thank you.