I believe Fissure is crashing my server, not too sure about it so I'll post the console error.
The server has stopped responding!
[10:51:26 ERROR]: Please report this to
http://www.spigotmc.org/
[10:51:26 ERROR]: Be sure to include ALL relevant console errors and Minecraft crash reports
[10:51:26 ERROR]: Spigot version: git-Spigot-13716d9-0899683 (MC: 1.8)
[10:51:26 ERROR]: ------------------------------
[10:51:26 ERROR]: Server thread dump (Look for plugins here before reporting to Spigot!):
[10:51:26 ERROR]: ------------------------------
[10:51:26 ERROR]: Current Thread: Server thread
[10:51:26 ERROR]: PID: 16 | Suspended: false | Native: false | State: RUNNABLE
[10:51:26 ERROR]: Stack:
[10:51:26 ERROR]: com.projectkorra.ProjectKorra.Methods.isMetal(Methods.java:1335)
[10:51:26 ERROR]: com.projectkorra.ProjectKorra.Methods.isEarthbendable(Methods.java:1351)
[10:51:26 ERROR]: com.projectkorra.ProjectKorra.Methods.isEarthbendable(Methods.java:1331)
[10:51:26 ERROR]: ca.carbogen.korra.fissure.Fissure.slap(Fissure.java:126)
[10:51:26 ERROR]: ca.carbogen.korra.fissure.Fissure.<init>(Fissure.java:56)
[10:51:26 ERROR]: ca.carbogen.korra.fissure.FListener.onPlayerSwing(FListener.java:15)
[10:51:26 ERROR]: sun.reflect.GeneratedMethodAccessor119.invoke(Unknown Source)
[10:51:26 ERROR]: sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[10:51:26 ERROR]: java.lang.reflect.Method.invoke(Method.java:483)
[10:51:26 ERROR]: org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301)
[10:51:26 ERROR]: org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
[10:51:26 ERROR]: org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)
[10:51:26 ERROR]: org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)
[10:51:26 ERROR]: net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:1158)
[10:51:26 ERROR]: net.minecraft.server.v1_8_R1.PacketPlayInArmAnimation.a(SourceFile:22)
[10:51:26 ERROR]: net.minecraft.server.v1_8_R1.PacketPlayInArmAnimation.a(SourceFile:8)
[10:51:26 ERROR]: net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13)
[10:51:26 ERROR]: java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[10:51:26 ERROR]: java.util.concurrent.FutureTask.run(FutureTask.java:266)
[10:51:26 ERROR]: net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:683)
[10:51:26 ERROR]: net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316)
[10:51:26 ERROR]: net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:623)
[10:51:26 ERROR]: net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:526)
[10:51:26 ERROR]: java.lang.Thread.run(Thread.java:745)