I see an issue with WP-GPX-Maps ( Bastianon Massimo ) version 1.5.04 .

The issue it’s on file WP-GPX-Maps.js , line 1078 et column 5. When I see the source code I see :

hoptions.data.datasets.push( getDataset(lng.atemp,myData,Items, color7, yaxe.id) );

And for me it’s :

hoptions.data.datasets.push( getDataset(lng.atemp,myData.Items, color7, yaxe.id) );

For the support of WP-GPX-Maps, two links :

• https://wordpress.org/support/plugin/wp-google-maps :
• http://devfarm.it/forums/forum/wp-gpx-maps/ :