Error in Testing Tool

I have tested 2 new Events (amongst other things this https://salzsau-panorama.de/veranstaltungen/sitzung-des-samtgemeinderates-gellersen/) in the Rich Snippets.

The tool says are 3 errors exist:

There is no content for location, name and start date

Take a look at the Result: http://bit.ly/2b1NCJw

https://ww.wp.xz.cn/plugins/events-manager-rich-snippets/