Your ZNPCsPlus v2.0.0 plugin cannot be loaded in the 1.8.8 version of the Paper server

[20130808]

Okay, needless to say, here is the console log:

it/unimi/dsi/fastutil/objects/Object2ObjectArrayMap initializing ZNPCsPlus v2.0.0 (Is it up to date?)
java.lang.NoClassDefFoundError: it/unimi/dsi/fastutil/objects/Object2ObjectArrayMap
	at com.mojang.serialization.CompressorHolder.<init>(CompressorHolder.java:10) ~[?:?]
	at com.mojang.serialization.MapEncoder$Implementation.<init>(MapEncoder.java:95) ~[?:?]
	at com.mojang.serialization.Encoder$4.<init>(Encoder.java:64) ~[?:?]
	at com.mojang.serialization.Encoder.empty(Encoder.java:64) ~[?:?]
	at com.mojang.serialization.Codec.<clinit>(Codec.java:611) ~[?:?]
	at java.lang.Class.forName0(Native Method) ~[?:?]
	at java.lang.Class.forName(Class.java:383) ~[?:?]
	at java.lang.Class.forName(Class.java:376) ~[?:?]
	at lol.pyr.znpcsplus.libraries.packetevents.api.util.reflection.Reflection.getClassByNameWithoutException(Reflection.java:260) ~[?:?]
	at lol.pyr.znpcsplus.libraries.packetevents.impl.util.SpigotReflectionUtil.initClasses(SpigotReflectionUtil.java:344) ~[?:?]
	at lol.pyr.znpcsplus.libraries.packetevents.impl.util.SpigotReflectionUtil.init(SpigotReflectionUtil.java:418) ~[?:?]
	at lol.pyr.znpcsplus.libraries.packetevents.impl.factory.spigot.SpigotPacketEventsBuilder$1.load(SpigotPacketEventsBuilder.java:104) ~[?:?]
	at lol.pyr.znpcsplus.ZNpcsPlus.<init>(ZNpcsPlus.java:93) ~[?:?]
	at lol.pyr.znpcsplus.ZNpcsPlusBootstrap.onLoad(ZNpcsPlusBootstrap.java:34) ~[?:?]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:298) [patched_1.8.8.jar:git-PaperSpigot-445]
	at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:202) [patched_1.8.8.jar:git-PaperSpigot-445]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:563) [patched_1.8.8.jar:git-PaperSpigot-445]
	at java.lang.Thread.run(Thread.java:833) [?:?]
Caused by: java.lang.ClassNotFoundException: it.unimi.dsi.fastutil.objects.Object2ObjectArrayMap
	at java.net.URLClassLoader.findClass(URLClassLoader.java:445) ~[?:?]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:102) ~[patched_1.8.8.jar:git-PaperSpigot-445]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:87) ~[patched_1.8.8.jar:git-PaperSpigot-445]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:588) ~[?:?]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[?:?]
	... 18 more

Judging from the error code, the plugin you provided was not compiled with the fastutil library. I'm not sure if this is my issue, but I need a detailed response! I am using Java 17 Looking forward to your reply

[Pikkachau]

what minecraft version are you using?