[MythicMobs] Enabling MythicMobs v5.5.1-9aedaa15
[17:18:22] [Server thread/INFO]: [MythicMobs] Loading MythicMobs for Spigot (MC: 1.16.5)...
[17:18:22] [Server thread/INFO]: [MythicMobs] The server is running Spigot; disabled PaperSpigot exclusive functionality
[17:18:24] [Server thread/ERROR]: Error occurred while enabling MythicMobs v5.5.1-9aedaa15 (Is it up to date?)
java.lang.RuntimeException: Unknown exception loading version handler. Volatile code has been disabled.
        at io.lumine.mythic.bukkit.MythicBukkit.getVolatileCodeHandler(MythicBukkit.java:344) ~[?:?]
        at io.lumine.mythic.bukkit.MythicBukkit.enable(MythicBukkit.java:172) ~[?:?]
        at io.lumine.mythic.bukkit.utils.plugin.LuminePlugin.onEnable(LuminePlugin.java:86) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[server.jar:3096a-Spigot-9fb885e-af1a232]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:342) ~[server.jar:3096a-Spigot-9fb885e-af1a232]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:480) ~[server.jar:3096a-Spigot-9fb885e-af1a232]
        at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugin(CraftServer.java:492) ~[server.jar:3096a-Spigot-9fb885e-af1a232]
        at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugins(CraftServer.java:406) ~[server.jar:3096a-Spigot-9fb885e-af1a232]
        at net.minecraft.server.v1_16_R3.MinecraftServer.loadWorld(MinecraftServer.java:554) ~[server.jar:3096a-Spigot-9fb885e-af1a232]
        at net.minecraft.server.v1_16_R3.DedicatedServer.init(DedicatedServer.java:257) ~[server.jar:3096a-Spigot-9fb885e-af1a232]
        at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:928) ~[server.jar:3096a-Spigot-9fb885e-af1a232]
        at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$0(MinecraftServer.java:273) ~[server.jar:3096a-Spigot-9fb885e-af1a232]
        at java.lang.Thread.run(Thread.java:831) [?:?]
Caused by: java.lang.reflect.InvocationTargetException
        at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?]
        at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:78) ~[?:?]
        at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]
        at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[?:?]
        at io.lumine.mythic.bukkit.MythicBukkit.getVolatileCodeHandler(MythicBukkit.java:336) ~[?:?]
        ... 12 more
Caused by: java.lang.NoClassDefFoundError: it/unimi/dsi/fastutil/shorts/ShortSet
        at io.lumine.mythic.core.volatilecode.VolatileCodeEnabled_v1_16_R3.<init>(VolatileCodeEnabled_v1_16_R3.java:46) ~[?:?]
        at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?]
        at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:78) ~[?:?]
        at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]
        at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[?:?]
        at io.lumine.mythic.bukkit.MythicBukkit.getVolatileCodeHandler(MythicBukkit.java:336) ~[?:?]
        ... 12 more
Caused by: java.lang.ClassNotFoundException: it.unimi.dsi.fastutil.shorts.ShortSet
        at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:140) ~[server.jar:3096a-Spigot-9fb885e-af1a232]
        at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:99) ~[server.jar:3096a-Spigot-9fb885e-af1a232]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:519) ~[?:?]
        at io.lumine.mythic.core.volatilecode.VolatileCodeEnabled_v1_16_R3.<init>(VolatileCodeEnabled_v1_16_R3.java:46) ~[?:?]
        at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?]
        at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:78) ~[?:?]
        at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]
        at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[?:?]
        at io.lumine.mythic.bukkit.MythicBukkit.getVolatileCodeHandler(MythicBukkit.java:336) ~[?:?]
        ... 12 more