[14:15:27 ERROR]: Error occurred while enabling MundoSK v1.7.4 (Is it up to date?)
java.lang.NoClassDefFoundError: org/bukkit/generator/ChunkGenerator$ChunkData
at com.pie.tlatoani.Mundo.onEnable(Mundo.java:189) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:335) [gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugin(CraftServer.java:356) [gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at org.bukkit.craftbukkit.v1_8_R1.CraftServer.enablePlugins(CraftServer.java:316) [gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.q(MinecraftServer.java:402) [gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.k(MinecraftServer.java:370) [gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.a(MinecraftServer.java:325) [gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:211) [gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:505) [gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
Caused by: java.lang.ClassNotFoundException: org.bukkit.generator.ChunkGenerator$ChunkData
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:91) ~[gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[gbinvl_minecraft_spigot_1.8-R0.1-SNAPSHOT.jar:git-Spigot-550ebac-7019900]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_181]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_181]
... 12 more