Check out this thread: https://moodle.org/mod/forum/discuss.php?d=420233
I beleive your case is exactly the same, even hosting provider is the same. I think the problem because that ionos doesn't support slash arguments.
I beleive your case is exactly the same, even hosting provider is the same. I think the problem because that ionos doesn't support slash arguments.
In other words, css, js, jpgs cannot be loaded: blabla.php/file.css