Error while logging in and editing page with with elementor

I am trying to set up my website with this plugin called “WP Steam Auth” to make it possible to log in with Steam through my website. Although when I try to log in I get Error1 Code1. Also when I go to edit my page with elementor I get Error2 Code2. I was wondering if anyone could help me out as I can’t find any help on forums. Thanks!

(I’m a new WordPress user and have almost no experience with coding, but i really want to make this work)

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