message: fix(legacy-plugin-chart-pivot-table): remove nulls from table
diff: @@ -112,6 +112,9 @@ function PivotTable(element, props) {
  const date = new Date(parseFloat(regexMatch[1]));
  $(this)[0].textContent = dateFormatter(date);
  $(this).attr('data-sort', date);
  + } else {
  + $(this)[0].textContent = '';
  + $(this).attr('data-sort', Number.NEGATIVE_INFINITY);
  }
  } else {
  $(this)[0].textContent = formatNumber(format, parsedValue);
  