Error on Add a marker to any map by adding [leaflet-marker]

I’m doing exactly as your demo on Add a marker to any map by adding [leaflet-marker] after any [leaflet-map] shortcode.

But it that is not working properly same as you demo. Look at my picture.
I tried both this 2 but they give me the same error. Any idea why and what i can do to resolve it?

[leaflet-marker visible=”true”]OSLO![/leaflet-marker]
or
[leaflet-marker]Message here: click here[/leaflet-marker]

https://www.ads-software.com/plugins/leaflet-map/