Mandatory information about my setup:

Have I searched the tickets before posting? Yes [color=red](Please, add the possibility to search tickets)[/color]
Have I searched the forum before posting? Yes
Have I read the documentation before posting (which pages?)? Yes, All
Joomla! version: 3.4.1
PHP version: 5.4.38
MySQL version: 5.5.42-37.1
Matukio version: 5.1.3
Direct link to the page that shows the issue: http://www.stargue.com/component/matukio/event/0/101-training/1-value-program-working-together-experience-morning-session

Description of my issue:
On clicking on an expired (old, past) event(s)throws an error as illustrated by the attached screen capture.

Your assistance with this issues is greatly appreciated at your earliest convenience.
Thank you in advance.