Music On Hold Issue

I suddenly don’t have any music on hold. It appears as though the files are still there; however, when I go to put a call on hold, I’m getting this message in my Asterisk CLI prompt:

[Feb 4 15:20:05] WARNING[22016]: res_musiconhold.c:254 ast_moh_files_next: Unable to open file ‘/var/lib/asterisk/mohmp3/mpg123’: No such file or direct

Check your file ownership and permissions.

Make sure they haven’t been changed to “root” or anything like that.

That doesn’t appear to be the solution. Can’t figure this one out. It’s strange that it just all of a sudden would stop. The simplest of things can sometimes be the biggest headaches!