Error with a gpx map plugin

Hi!

I am trying to show in a textarea custom field a map from the WP GPX plugin. I have made an override to be able to execute shortcodes in textarea field. This is actually working with other plugins (like wpDataTable) but when I try to insert maps, for some reason errors start to appear. In fact I have tried several GPX map viewers (OSM, LF Hiker) and and errors appear in all of them. However, if I use them on a page out of the directorist single page, they work with no problem (see f.i. https://carrerasporeljardin.deignos.com/sample-page). Is there any way to make them work in the directorist single page?

Thanks a lot in advance for your support!

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