The chart replay does not work.

I’ve tried to set up a project and do a replay with four charts.

The period was from Oct. 1st to no end.

But first, the charts were “loading” forever.

So I reloaded the browser and the “loading” disappeared.

But when I click “play” button, nothing happens.

“ bar gfoward” does not work either.

“bar backward” button works, but that’s it.

How should I deal with this?