clear lagg error

[15:27:46] [Server thread/WARN]: Unexpected exception while parsing console command "lagg clear"
org.bukkit.command.CommandException: Unhandled exception executing command 'lagg' in plugin ClearLag v2.6.2
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:175) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java:683) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchServerCommand(CraftServer.java:670) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
	at net.minecraft.server.v1_7_R1.DedicatedServer.aw(DedicatedServer.java:286) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
	at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:251) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
	at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
	at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
	at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
Caused by: java.lang.NullPointerException
	at me.minebuilders.clearlag.managers.EntityManager.removeEntity(EntityManager.java:29) ~[?:?]
	at me.minebuilders.clearlag.commands.ClearCmd.run(ClearCmd.java:17) ~[?:?]
	at me.minebuilders.clearlag.commands.BaseCmd.processCmd(BaseCmd.java:34) ~[?:?]
	at me.minebuilders.clearlag.listeners.CommandListener.onCommand(CommandListener.java:25) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
	... 8 more