Errors in browser console

[wormosteeze]

Hello, I followed the setup guide and am pretty sure I did everything correctly, but the map isn't updating and I'm getting these errors in the inspect console on Chrome.

The location shown here is just the default starting code I set in the html:

It says:
Failed to load resource: net::ERR_CONNECTION_REFUSED socket.io/?EIO3&transport=polling&t=NV3RQGu:1

based on this page, I do think it's getting my data as it should