Error on startup

[02:55:18] [Server thread/INFO]: [VotifierCount] Enabling VotifierCount v2.0.0
[02:55:18] [Server thread/WARN]: [DataManagerAPI] Table votifiercount already exists?
[02:55:18] [Server thread/ERROR]: Error occurred while enabling VotifierCount v2.0.0 (Is it up to date?)
java.lang.NullPointerException
	at com.gmail.louis1234567890987654321.votifiercount.VotifierCount.onEnable(VotifierCount.java:79) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:218) ~[spigot.jar:git-Spigot-1228]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457) [spigot.jar:git-Spigot-1228]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:385) [spigot.jar:git-Spigot-1228]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugin(CraftServer.java:302) [spigot.jar:git-Spigot-1228]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.enablePlugins(CraftServer.java:284) [spigot.jar:git-Spigot-1228]
	at net.minecraft.server.v1_7_R1.MinecraftServer.m(MinecraftServer.java:348) [spigot.jar:git-Spigot-1228]
	at net.minecraft.server.v1_7_R1.MinecraftServer.g(MinecraftServer.java:325) [spigot.jar:git-Spigot-1228]
	at net.minecraft.server.v1_7_R1.MinecraftServer.a(MinecraftServer.java:281) [spigot.jar:git-Spigot-1228]
	at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.java:186) [spigot.jar:git-Spigot-1228]
	at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:430) [spigot.jar:git-Spigot-1228]
	at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [spigot.jar:git-Spigot-1228]