[18:13:27 ERROR]: Could not pass event PlayerPrefixUpdateEvent to AdvancedClans v1.0.1
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[Survival.jar:git-PaperSpigot-"4c7641d"]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[Survival.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[Survival.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [Survival.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) [Survival.jar:git-PaperSpigot-"4c7641d"]
        at me.jose.finalclans.objects.ClanPlayer$2.onQueryDone(ClanPlayer.java:106) [AdvancedClans-1.0.2.jar:1.7.12]
        at me.jose.finalclans.database.SQLite$1$1.run(SQLite.java:142) [AdvancedClans-1.0.2.jar:1.7.12]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:59) [Survival.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:352) [Survival.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:783) [Survival.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [Survival.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [Survival.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [Survival.jar:git-PaperSpigot-"4c7641d"]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
Caused by: java.lang.NullPointerException
        at net.milkbowl.vault.chat.Chat.getPlayerPrefix(Chat.java:91) ~[Vault-1.7.2.jar:?]
        at me.jose.finalclans.objects.ClanPlayer.checkPrefix(ClanPlayer.java:228) ~[?:?]
        at me.jose.finalclans.listeners.ChatListener.onPrefixUpdate(ChatListener.java:25) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor799.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_191]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_191]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[Survival.jar:git-PaperSpigot-"4c7641d"]
        ... 13 more