[12:00:41] [Server thread/ERROR]: Could not load 'plugins\pltest.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: com/comphenix/protocol/events/PacketListener
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) ~[Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:292) [Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:198) [Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_25]
Caused by: java.lang.NoClassDefFoundError: com/comphenix/protocol/events/PacketListener
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25]
	at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_25]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	... 6 more
Caused by: java.lang.ClassNotFoundException: com.comphenix.protocol.events.PacketListener
	at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_25]
	at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_25]
	at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_25]
	at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_25]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101) ~[Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25]
	at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_25]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[Spigot.jar:git-Spigot-e4d4710-e1ebe52]
	... 6 more