404 Error with Arabic

I tried to switch to Arabic today on the desktop version and it lead me to an error page: 404 Not Found

German, the other language I am currently using Lingq for seems to work fine. I attempted loading all other Languages on the site and the error also appears with Finnish but nothing else. On the mobile app, I can view Arabic and play playlists, but none of my courses appear.

Any help would be appreciated, thanks.