Event Organiser [eo_venue_map]- googlemap doesn't shown

I have the same issue like “resolved” in a thread before on my website >> the googlemaps are not showing on the event-detailpages and on the venue-page since this week or the week before. Before that there were no problems.

You can find it at the dev-Site:
https://wp.dreipass.net/?event=nils-weinhold-quintett

I’m using Resonsive Pro-theme.
And I have the latest version of the plugin installed (2.5.).

As you can see the <div> for the googlemap is empty. But the wp-footer.php is inculded in the footer.php (what is mentioned as solution as the problem is non-loading js)!

So I’m curious what the issue is.

Thanks for Help an greeting from germany

tim