[22:51:18] [Server thread/ERROR]: Could not load 'plugins/WarZone-Switcher.jar' in folder 'plugins'
org.bukkit.plugin.InvalidDescriptionException: Invalid plugin.yml
	at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:152) ~[spigot.jar:git-Spigot-3fb9445-6e3cec8]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:133) [spigot.jar:git-Spigot-3fb9445-6e3cec8]
	at org.bukkit.craftbukkit.v1_11_R1.CraftServer.loadPlugins(CraftServer.java:301) [spigot.jar:git-Spigot-3fb9445-6e3cec8]
	at net.minecraft.server.v1_11_R1.DedicatedServer.init(DedicatedServer.java:204) [spigot.jar:git-Spigot-3fb9445-6e3cec8]
	at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:544) [spigot.jar:git-Spigot-3fb9445-6e3cec8]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_91]
Caused by: java.io.FileNotFoundException: Jar does not contain plugin.yml
	... 6 more