Disguise Craft fails to load

Hello so I am making a plugin that needs Disguise Craft API. And every time i run a server it throws error:

Code:

[17:37:01] [Server thread/ERROR]: Could not load 'plugins\DisguiseCraft.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: net/minecraft/server/v1_8_R2/Packet
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:149) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:394) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:301) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.v1_18_R2.CraftServer.loadPlugins(CraftServer.java:407) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3491-Spigot-b081915-95d233d]
        at org.bukkit.craftbukkit.v1_18_R2.CraftServer.reload(CraftServer.java:915) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3491-Spigot-b081915-95d233d]
        at org.bukkit.Bukkit.reload(Bukkit.java:801) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:27) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.v1_18_R2.CraftServer.dispatchCommand(CraftServer.java:826) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3491-Spigot-b081915-95d233d]
        at org.bukkit.craftbukkit.v1_18_R2.CraftServer.dispatchServerCommand(CraftServer.java:811) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3491-Spigot-b081915-95d233d]
        at net.minecraft.server.dedicated.DedicatedServer.be(DedicatedServer.java:454) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3491-Spigot-b081915-95d233d]
        at net.minecraft.server.dedicated.DedicatedServer.b(DedicatedServer.java:430) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3491-Spigot-b081915-95d233d]
        at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:1237) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3491-Spigot-b081915-95d233d]
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1047) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3491-Spigot-b081915-95d233d]
        at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:304) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3491-Spigot-b081915-95d233d]
        at java.lang.Thread.run(Thread.java:833) [?:?]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_8_R2/Packet
        at java.lang.Class.forName0(Native Method) ~[?:?]
        at java.lang.Class.forName(Class.java:467) ~[?:?]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:67) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:145) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        ... 15 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_8_R2.Packet
        at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:147) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:99) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[?:?]
        at java.lang.Class.forName0(Native Method) ~[?:?]
        at java.lang.Class.forName(Class.java:467) ~[?:?]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:67) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:145) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        ... 15 more

sorry for not formatting it. I am new here.

 

anyone know?

 

pls anyone