Spigot Vote-link 1.0

If the author is still active on this. I like the fact that the config was easy to customize but I am getting errors.
Please fix so I can give you a great rating.
Here is what my console is spamming.
24.07 10:42:52 [Server] INFO at main.Mainclass.signInteract(Mainclass.java:34) ~[?:?]
24.07 10:42:52 [Server] INFO Caused by: java.lang.ClassCastException: org.bukkit.craftbukkit.v1_10_R1.block.CraftBlockState cannot be cast to org.bukkit.block.Sign
24.07 10:42:52 [Server] INFO at java.lang.Thread.run(Thread.java:745) [?:1.8.0_66]
24.07 10:42:52 [Server] INFO at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:571) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:672) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:399) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:733) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at net.minecraft.server.v1_10_R1.SystemUtils.a(SourceFile:45) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_66]
24.07 10:42:52 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_66]
24.07 10:42:52 [Server] INFO at net.minecraft.server.v1_10_R1.PlayerConnectionUtils$1.run(SourceFile:13) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at net.minecraft.server.v1_10_R1.PacketPlayInUseItem.a(SourceFile:11) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at net.minecraft.server.v1_10_R1.PacketPlayInUseItem.a(SourceFile:55) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at net.minecraft.server.v1_10_R1.PlayerConnection.a(PlayerConnection.java:890) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at net.minecraft.server.v1_10_R1.PlayerInteractManager.a(PlayerInteractManager.java:492) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at org.bukkit.craftbukkit.v1_10_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:231) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at us.Myles.PWP.TransparentListeners.PWPRegisteredListener.callEvent(PWPRegisteredListener.java:30) [PerWorldPlugins_1.8.8_Java_7.jar:?]
24.07 10:42:52 [Server] INFO at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[custom18.jar:git-Spigot-c55900f-9af379f]
24.07 10:42:52 [Server] INFO at us.Myles.PWP.TransparentListeners.PerWorldPluginLoader$1.execute(PerWorldPluginLoader.java:122) ~[?:?]
24.07 10:42:52 [Server] INFO org.bukkit.event.EventException
24.07 10:42:52 [Server] INFO Could not pass event PlayerInteractEvent to Vote-link v2.0