score:1

Accepted answer

It's because you are trying to set non existent attributes to the circle.

Remove these lines and it will work

  .attr("name ", (d) => d.Name )
  .attr("country", (d) => d.Nationality )
  .attr("year", (d) => d.Year )
  .attr("time", (d) => d.Time ) 

codepen


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