I'm sorry, but I couldn't find such variable anywhere. What is this and how exactly can it be fixed?

2012-12-17 17:34:05 [INFO] [Dynmap-Towny] Dynmap does not have player-info-protected enabled - visibility-by-town will have no effect
2012-12-17 17:34:05 [INFO] [Dynmap-Towny] Dynmap does not have player-info-protected enabled - visibility-by-nation will have no effect