Critical Error – cannot update website

Hi, I am unable to edit my website or log in to wordpress at all. I get the error:
There has been a critical error on this website. Please check your site admin email inbox for instructions.

link:Learn more about troubleshooting WordPress

I have not received any emails from WordPress. The link to learn more is not helping resolve my issue. Please advise on what I can do because I really need to update my website today.

Thanks in advance.

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


This site will teach you how to build a WordPress website for beginners. We will cover everything from installing WordPress to adding pages, posts, and images to your site. You will learn how to customize your site with themes and plugins, as well as how to market your site online.

Buy WordPress Transfer