Parameter url must be a string, not undefined

[binaryMoods]

I'm watching an MVA tutorial on nodejs, but it's from the last year. It's a very simple chat app with no authentication or anything. I managed to get rid of most deprecated errors, but this one. 

Running app.js and it will say Parameter url must be a string, not undefined. I believe it's to do with socket.

See screenshot. 

https://github.com/sayar/NodeMVA/tree/master/09_NodeChatroom

[binaryMoods]

And my updated code is here

http://pastebin.com/rbsRbj66 

[Ryan Graham]

You are reading the URL for your MongoDB connection from an environment variable but it appears that you have not actually set it, so it is showing up as an undefined value in your code.

~Ryan

On Fri, 11 Dec 2015 at 12:16 binaryMoods <imav...@gmail.com> wrote:

And my updated code is here

http://pastebin.com/rbsRbj66 

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~Ryan

[binaryMoods]

Hi Ryan, awesome. That totally makes sense. I've just started learning nodejs. Thanks a lot!