Steps to reproduce the issue

You can simply go to my site www.i2bad.com and it immediately comes up. It also happens on the back-end as well www.i2bad.com/administrator

Expected result

When i go to my site i expect to see the home page

Actual result

When i go to the site i immediately get the following error. Error displaying the error page: Invalid JDocument Class: Invalid JDocument Class

System information (as much as possible)

I am using joomla with a template called Eventum from joomshaper

Additional comments

I need as much help as possible i am clueless on what my next steps should be.