Layer but no Map

I have created markers and added them to a layer.

I have then added the layer shortcode to a page, but all that is displayed is the layer and not the underlying map.

Zoom in/out zooms the markers but still no map appears.

Page is at… http://www.peterboroughphantoms.com/?page_id=484
Shortcode used: [mapsmarker layer=”1″]

Thanks
Ian

http://ww.wp.xz.cn/plugins/leaflet-maps-marker/