I am getting the same [BadRequestException] error message on about 1 in 3 collections I try to edit today. Some were migrated, some were created in the new dashboard. I deleted the collections that I couldn't edit and tried to remake them, but I also get the error message when I try to create a new collection. So, I can't edit some of my current collections, and I can't create new ones. I've tried using all kinds of combinations of parameters, including only writing in the required title, and it never changes the error message:
I also cannot add anything to collections that exist. When I try to add articles, banners or other collections, I get another error message:
