新服务器是否有 mod_dir 已加载，使用 DirectorySlash On 而旧的没有，这导致了这个问题?

Is it possible the new server has mod_dir loaded, with DirectorySlash On where the old one did not and that is leading to this problem?

(注意 DirectorySlash On 是默认的，如果 mod_dir 被加载并且没有任何东西覆盖它)

(Note that DirectorySlash On is the default if mod_dir is loaded and nothing is overriding it)