Bukkit

i put in the latest jar into my server and i get the following error
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: net/md_5/bungee/api/chat/BaseComponent at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:326) ~[craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:248) [craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:303) [craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:188) [craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:522) [craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_172] Caused by: java.lang.NoClassDefFoundError: net/md_5/bungee/api/chat/BaseComponent at com.hmmcrunchy.disease.Disease.<init>(Disease.java:120) ~[?:?] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_172] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_172] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_172] at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_172] at java.lang.Class.newInstance(Class.java:442) ~[?:1.8.0_172] at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:66) ~[craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] ... 6 more Caused by: java.lang.ClassNotFoundException: net.md_5.bungee.api.chat.BaseComponent at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[?:1.8.0_172] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:128) ~[craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:76) ~[craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_172] at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_172] at com.hmmcrunchy.disease.Disease.<init>(Disease.java:120) ~[?:?] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_172] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_172] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_172] at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_172] at java.lang.Class.newInstance(Class.java:442) ~[?:1.8.0_172] at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:66) ~[craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[craftbukkit-1.12.2.jar:git-Bukkit-2b93d83] ... 6 more

hey there, im afraid you need to be running spigot to get this to go now