Bug Problem

Hello,
I use Eduma WordPress theme, and the error “There was a fatal error with this site” is shown when I activate this plugin.
You can see the error in this page specifically
https://dotacademyjo.com/%d8%a7%d9%84%d9%85%d8%af%d8%b1%d8%a8%d9%8a%d9%86/

When I deactivated the plugin the problem gone.
Do you have any idea why this problem happened ?`

The page I need help with: [log in to see the link]