It was loading fine yesterday, however on loading today all my visualisations seem to be broken as the data isn’t being loaded in? I wonder if it’s something I’m doing or any of my functions post this cell?
The Unrecognized feature: ... warnings are always present (to me, al least), they are not the cause of your error. You might filter the “warning” level messages out, so that we see if there is an error (red).
Also: could you focus on the Network tab and reload, so that we see if the request to the CSV file fails and with which error message
GET https://static.observableusercontent.com/files/fa5e7c1e71d15b614fdd7e149175ff9799852f3f6baa5df49467c39f0ae06572e0a9fe398aebcec877188a5ecc300979f320b8c292c93aecdf06a0cd7385cdba net::ERR_CONNECTION_RESET 200 (OK)
I have no idea about the reason. Maybe you can try to open the same notebook in different browsers, being logged in and out, and if you can: from different network providers or through a proxy, to understand which configurations work or not.