VLC can't recognize the input's format: The format of 'file:///media/PMZT16/%5BAnimWorld%5D%20%5BHorribleSubs%5D%20Servant%20x%20Service%20-%2013%20%5B720p%5D.ass' cannot be detected. Have a look at the log for details.
ASS=off: ASS/SSA subtitle rendering
make config(as root or with root privilege) you will see the option. You can choose it there. I think you'll have to reinstall vlc using ports though, to get it working if it's not already turned on.