Geochart data: react-google-charts

In using react-google-charts geochart, this data is acceptable:

const data = [
  ["Country", "DevCount"],
  ["Germany", 200],
  ["United States", 300]

but this isn’t (with the error: “Cannot draw chart: no data specified.”):

is it nested down a layer too far maybe? I’ve tried this to lift it up:

getData = () => {
    const data = Object.values(this.props.countriesToRender);
    return( => array[0]));

index 0 & 1 are what I want, the names and numbers.

solved: the problem is there were string column headers missing as the first item in the array