Critical Error on my website

Hello,

I have been using Better Elementor Addons as a key component of my site:

https://qmgllc.com/

However today I encountered a critical error on the website caused by the better addons plugin:

My site was working fine yesterday and I am confounded as to why this issue has come up. This issue causes the site to appear like this:

With this line of text at the bottom:

I would like to solve this critical issue as soon as possible due to the critical nature of the addons and their integral function on my website.

I look forward to hearing from you soon.

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