Filetype for m4a (Audio) not guessed correctly

[texnixe]

@teichsta

audo/m4a

You have a typo here, but that’s probably from copying here and not the issue.

In your server config or .htaccess, you can set the mime types for files

The media type for "file.pdf" cannot be detected

It can help to define mime types in htaccess. Im afraid i dont know the equivalent in Nginx. These rules are a good start…