Excuse me for my ignorance, but that seems to be the script code for a smartphone browser (it's very like the webpage source HTML code if you ask me) reloading the page often works for the most browsers
I got this error too when I logged in just now using Firefox, it redirected me to this page, which is the same one in the first post. Someone should look into why this happens. It looks like it has something to do with the wiki.
Hey that happens to me also i also use firefox! Usually when it happens im in the wiki and i notice im not logged in so i log in and get that error screen