404 Page not found when cloning study

I have been able to clone studies just fine, in fact I cloned several just last night. But suddenly I started getting a "404 Page not found" error whenever I try to clone a study (even if I try cloning one that I've already successfully cloned previously). Is there some kind of invisible throttling or limit to cloning requests? I would really appreciate any answer!

Works fine here. Try a different browser. If it works there, clear lichess data from your main browser and try again. Not sure about the cloning limit.