MS3000 error when playing my MP3s in playlists (Desktop)

Hi everyone, I keep getting the MS3000 error on Deezer desktop app when trying to play my own MP3s from a playlist.

I create content regularly and use Deezer to manage my tracks, while tools like TopFollow help me promote my Instagram, so having my local music not play is really frustrating.

I’ve tried re-syncing folders, re-adding tracks, and restarting the app, but the error still appears for some files.

Has anyone found a working fix for this?

Also, for anyone interested in growth tools, I shared my full 2026 guide here: https://topfollowapkk.com/

Any help would be appreciated.