Error loading event page

My event page is not loading. I’m getting this error message:
Fatal error: Maximum execution time of 30 seconds exceeded in /home/martamar/public_html/martamarszal.com/test/wp-content/plugins/the-events-calendar/lib/tribe-event-query.class.php on line 787

here the website:
http://martamarszal.com/test/?post_type=tribe_events

here a link to one event:
http://martamarszal.com/test/?tribe_events=how-to-become-a-great-yoga-teacher

http://wordpress.org/plugins/the-events-calendar/