[22:19:59 ERROR]: Error occurred while enabling Sandbot v3.3-Beta (Is it up to date?)
java.lang.NoSuchMethodError: org.bukkit.entity.Entity.setInvulnerable(Z)V
        at net.citizensnpcs.trait.HologramTrait.createHologram(HologramTrait.java:62) ~[?:?]
        at net.citizensnpcs.trait.HologramTrait.load(HologramTrait.java:83) ~[?:?]
        at net.citizensnpcs.trait.HologramTrait.onSpawn(HologramTrait.java:103) ~[?:?]
        at net.citizensnpcs.api.npc.AbstractNPC.addTrait(AbstractNPC.java:115) ~[?:?]
        at net.citizensnpcs.api.npc.AbstractNPC.addTrait(AbstractNPC.java:94) ~[?:?]
        at net.citizensnpcs.npc.CitizensNPC.spawn(CitizensNPC.java:321) ~[?:?]
        at net.citizensnpcs.npc.CitizensNPC.spawn(CitizensNPC.java:225) ~[?:?]
        at me.elapsed.plugin.sandbot.api.SandBotAPI.create(SandBotAPI.java:128) ~[?:?]
        at me.elapsed.plugin.sandbot.SandBot.onEnable(SandBot.java:72) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[factions.jar:git-TacoSpigot-04511af6]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:339) [factions.jar:git-TacoSpigot-04511af6]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:411) [factions.jar:git-TacoSpigot-04511af6]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:353) [factions.jar:git-TacoSpigot-04511af6]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:312) [factions.jar:git-TacoSpigot-04511af6]
        at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:459) [factions.jar:git-TacoSpigot-04511af6]
        at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:423) [factions.jar:git-TacoSpigot-04511af6]
        at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:378) [factions.jar:git-TacoSpigot-04511af6]
        at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:281) [factions.jar:git-TacoSpigot-04511af6]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:628) [factions.jar:git-TacoSpigot-04511af6]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_252]