Plex can't synchronize (Apple) Music Playlists like Itunes Playlists?

Server Version#:1.21.2
Player Version#:2.58.0.176-38e019da

Hello,
First, sorry for my bad english writing…
I migrated my MacMini yesterday with BigSur, and now I use Music instead of iTunes to keep my music library clean and tag every files. Before I usually had to manually synchronise my iTunes playlists in admin/extensions. Playlist wasn’t automatically synchronize, but manually it worked.
Since BigSur and Music app, I change the path, because now Music library is here : /Users/mediacenter/Music/Music/Music Library.musiclibraryibrary.xml
But Plex doesn’t recognize this file. I have systematically this error :
Capture d’écran 2021-01-24 à 16.57.34|450x502

Hi everybody,
No one can answer me?
Is there special support for Plex Pass I got for years?
thanks for your support.

No answer ?

No response about anybody since 2 months… :pensive:

If that can help someone I succeed to import my Music (Apple app on a Mac mini) playlists with this work :

In Music, export entire library in an .xml file (menu file/librayry/export library…). I put this export in Music folder. Then in Plex parameters I put this new path in the Extensions/iTunes path.

AND THAT’S WORK now with Music (Apple app) :wink:

The only inconvenient is to do that manually each time you update your libraries in Music.