Hey @OscarGodson, yes, that does look like a live endpoint. Without looking at your code, it’s hard to give specific advice (other than to ask if that call is hard-coded anywhere?), but I did want to share this thread that has some suggestions for running functions locally:
And these docs, which you’ve probably already checked out but sharing just in case 
https://github.com/netlify/cli/blob/master/docs/netlify-dev.md#locally-testing-functions-with-netlify-functionsinvoke
Want to take a look and let us know if you have follow-up questions?