Service logging to file

[tdsotm]

I've tried running as a service with log output in order to troubleshot local playlist playing with no success.
I've used:
ExecStart=/usr/bin/java -Dnogui=true -jar JMusicBot.jar > jmusic.log 2>&1
It logs the initial loading but nothing further.
In the Discord I get:
APP mbot: ⌚ Loading... [full-path-to-playlist.m3u] 🚫 Error loading: Unknown file format.
Any ideas on how to find out what's happening? The bot is running as a service in a ubuntu vm