Epic World Generator Pre-5 Error

[frutymango]

Error occurred while enabling EpicWorldGenerator v8.0.0-PRE-RELASE-5 (Is it up to date?)
java.lang.reflect.GenericSignatureFormatError: Signature Parse error: expected a class type
Remaining input: %%https://directleaks.net/members/253
at sun.reflect.generics.parser.SignatureParser.error(Unknown Source) ~[?:1.8.0_181]
at sun.reflect.generics.parser.SignatureParser.parseClassTypeSignature(Unknown Source) ~[?:1.8.0_181]
at sun.reflect.generics.parser.SignatureParser.parseClassSignature(Unknown Source) ~[?:1.8.0_181]
at sun.reflect.generics.parser.SignatureParser.parseClassSig(Unknown Source) ~[?:1.8.0_181]
at sun.reflect.generics.repository.ClassRepository.parse(Unknown Source) ~[?:1.8.0_181]
at sun.reflect.generics.repository.ClassRepository.parse(Unknown Source) ~[?:1.8.0_181]
at sun.reflect.generics.repository.AbstractRepository.<init>(Unknown Source) ~[?:1.8.0_181]
at sun.reflect.generics.repository.GenericDeclRepository.<init>(Unknown Source) ~[?:1.8.0_181]
at sun.reflect.generics.repository.ClassRepository.<init>(Unknown Source) ~[?:1.8.0_181]
at sun.reflect.generics.repository.ClassRepository.make(Unknown Source) ~[?:1.8.0_181]
at java.lang.Class.getGenericInfo(Unknown Source) ~[?:1.8.0_181]
at java.lang.Class.getGenericSuperclass(Unknown Source) ~[?:1.8.0_181]
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:174) ~[spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:100) ~[spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at com.google.gson.Gson.getAdapter(Gson.java:423) ~[spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at com.google.gson.internal.bind.MapTypeAdapterFactory.getKeyAdapter(MapTypeAdapterFactory.java:142) ~[spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at com.google.gson.internal.bind.MapTypeAdapterFactory.create(MapTypeAdapterFactory.java:125) ~[spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at com.google.gson.Gson.getAdapter(Gson.java:423) ~[spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at com.google.gson.Gson.fromJson(Gson.java:886) ~[spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at com.google.gson.Gson.fromJson(Gson.java:852) ~[spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at com.minelazz.epicworldgenerator.nativeAPI.implementations.v1_12_R1.NMSImplementation.D(fc:64) ~[?:?]
at minelazz.iiIiIIIiiI.D(bb:155) ~[?:?]
at com.minelazz.epicworldgenerator.EpicWorldGenerator.onEnable(fl:167) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337) [spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:403) [spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:381) [spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:330) [spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:206) [spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) [spigot-1.12.2-R0.1-SNAPSHOT-b1648.jar:git-Spigot-642f6d2-57ab4cf]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_181]


using 1.12.2 spigot