Can't retrieve metadata

[Lecodeurenretard]

Hello, I am working on a server and I wrote a script that fetch tags of a mp3 file, the issue is once the new Mp3Info($path); , the properties: 'tags', 'tags1' and 'tags2' are empty arrays ( I know it from var_dump()).

I tried to switch from the URL to the path on the server but it doesn't change anything.

edit: I also checked the metadatas with the cmd line.