Polaczenie discorda z serwerem

Ciekawe, jaki to błąd? 

java.lang.NoSuchMethodError: ch.njol.skript.Skript.methodExists(Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/Class;)Z
        at me.iblitzkriegi.vixio.util.skript.SkriptUtil.<clinit>(SkriptUtil.java:27) ~[?:?]
        at me.iblitzkriegi.vixio.changers.EffChange.init(EffChange.java:153) ~[?:?]
        at ch.njol.skript.lang.SkriptParser.parse(SkriptParser.java:237) ~[?:?]
        at ch.njol.skript.lang.SkriptParser.parse(SkriptParser.java:164) ~[?:?]
        at ch.njol.skript.lang.Statement.parse(Statement.java:42) ~[?:?]
        at ch.njol.skript.ScriptLoader.loadItems(ScriptLoader.java:615) ~[?:?]
        at ch.njol.skript.lang.TriggerSection.<init>(TriggerSection.java:55) ~[?:?]
        at ch.njol.skript.lang.Conditional.<init>(Conditional.java:44) ~[?:?]
        at ch.njol.skript.ScriptLoader.loadItems(ScriptLoader.java:701) ~[?:?]
        at ch.njol.skript.lang.Loop.<init>(Loop.java:74) ~[?:?]
        at ch.njol.skript.ScriptLoader.loadItems(ScriptLoader.java:651) ~[?:?]
        at ch.njol.skript.ScriptLoader.loadScript(ScriptLoader.java:489) ~[?:?]
        at ch.njol.skript.ScriptLoader.loadScripts(ScriptLoader.java:239) ~[?:?]
        at ch.njol.skript.ScriptLoader.loadScripts(ScriptLoader.java:193) ~[?:?]
        at ch.njol.skript.Skript$2.run(Skript.java:378) ~[?:?]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot1.8.8.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [spigot1.8.8.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:723) [spigot1.8.8.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot1.8.8.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot1.8.8.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot1.8.8.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_281]

Jakiego używasz Silnika na jakiej wersji oraz wersja Skript oraz Vixio?