Is WP-GPX Maps PHP7 compatible

Yes, my site is running on PHP7 just fine.

On mine too. No problems here!

Hello I updated my Server /Webspace to PHP7 and it doesn′t work!

See here https://www.overlandtour.de/mit-dem-shosholoza-meyl-zug-quer-durch-suedafrika/
and here https://www.overlandtour.de/kyffhaeuser-naturpark/

Now it doesn′t Show the map and the Feature Image in the theme.

Before it was fine with PHP5.6.

Hope you can help me! Thx
Jens