Study doesn't open anymore

I made a study (lot of work) and now I can't open it anymore, allthough I see it in my studies. The link I get is lichess.org/study/public/hot Does anyone know what has happend

greetings NielsvdMark

@NielsvdMark try cloning the study. Its probably a problem at your end.

This is the original link, wich I send to my stydents. (lichess.org/study/llPIYHcf) Last week it worked, now it doesn't work. Strange right?
If I can't open it, I also can't clone it, right?

github.com/ornicar/lila/issues/8849

Someone made a github issue.

As I commented on github, I can open the study in the mobile app but not the browser.