Visualize Data with a Scatterplot Graph isn't loading json

Tell us what’s happening:
How come d3 isn’t loading the json? Am I missing something from I did the following:

d3.json("", function(data){

yet my console is still empty

edit: Read the changelogs for d3 and now it uses promises instead of asynchronous calls

Your code so far

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36.

Link to the challenge:

I set it up your code snippet in a fiddle - it appears to be loading with no issues:

d3 example code