Administrators: Please do not delete this category even if it is empty! This category may be empty occasionally or even most of the time.

These files are a priority to check, as they are derived from a file which may have been deleted.

A very simple linkfix would be to change the {{Derived from| to {{Derived from|by=:}}{{F|3=n|;
it will work if there is only one file, or if the first one is the not existing one: the file name is displayed as plain text, without the link.