00:15:36 [WARNING] Unexpected exception while parsing console command
org.bukkit.command.CommandException: Unhandled exception executing command 'class' in plugin ClassRanks v0.1.4.5
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:163)
        at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:355)
        at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:351)
        at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:506)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:485)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:374)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:417)
Caused by: java.lang.ClassCastException: org.bukkit.craftbukkit.command.ColouredConsoleSender cannot be cast to org.bukkit.entity.Player
        at praxis.slipcor.classranksBP.ClassRanks.onCommand(ClassRanks.java:99)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
        ... 7 more
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