14.12 20:47:27 [Server] ERROR Could not pass event PlayerJoinEvent to SlowSpawn v1.0
14.12 20:47:27 [Server] INFO org.bukkit.event.EventException
14.12 20:47:27 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.PlayerList.onPlayerJoin(PlayerList.java:314) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.PlayerList.a(PlayerList.java:173) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.LoginListener.b(LoginListener.java:144) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.LoginListener.c(LoginListener.java:54) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.NetworkManager.a(NetworkManager.java:231) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.ServerConnection.c(ServerConnection.java:148) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:875) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at java.lang.Thread.run(Thread.java:748) [?:1.8.0_232]
14.12 20:47:27 [Server] INFO Caused by: java.util.ConcurrentModificationException
14.12 20:47:27 [Server] INFO at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445) ~[?:1.8.0_232]
14.12 20:47:27 [Server] INFO at java.util.HashMap$KeyIterator.next(HashMap.java:1469) ~[?:1.8.0_232]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.EntityTracker.track(EntityTracker.java:32) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.WorldManager.a(WorldManager.java:18) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.World.a(World.java:1068) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.WorldServer.a(WorldServer.java:1003) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.World.addEntity(World.java:1061) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.World.addEntity(World.java:989) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at net.minecraft.server.v1_8_R3.PlayerList.moveToWorld(PlayerList.java:624) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]
14.12 20:47:27 [Server] INFO at org.bukkit.craftbukkit.v1_8_R3.entity.CraftPlayer.teleport(CraftPlayer.java:568) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"8b18730"]