JS error in tooltips when data is null for a timeline chart

Hi

I am having a problem when my data is not “matching” and some values are null in a certain date, js trows a series of errors that data is null "TypeError: null is not an object (evaluating 'b.value’)” and the tooltip doesn’t show

I did not tested but looks like a small fix could be to set as 0 if the value is null

So here it’s just a case to have an if testing the value of “b” before return.

i.categoryName = function(a) {
var b = this.config;
return a < b.axis_x_categories.length ? b.axis_x_categories[a] : a
}

But I am not sure if it’s the case

Sorry if my explanation wasn’t great