[10:15:20] [Server thread/ERROR]: Could not load 'plugins\Hidden-1.2.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NullPointerException
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[spigot-1.9.4.jar:git-Spigot-798f32d-0cd0397]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) ~[spigot-1.9.4.jar:git-Spigot-798f32d-0cd0397]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [spigot-1.9.4.jar:git-Spigot-798f32d-0cd0397]
	at org.bukkit.craftbukkit.v1_9_R2.CraftServer.loadPlugins(CraftServer.java:297) [spigot-1.9.4.jar:git-Spigot-798f32d-0cd0397]
	at net.minecraft.server.v1_9_R2.DedicatedServer.init(DedicatedServer.java:200) [spigot-1.9.4.jar:git-Spigot-798f32d-0cd0397]
	at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:532) [spigot-1.9.4.jar:git-Spigot-798f32d-0cd0397]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_91]
Caused by: java.lang.NullPointerException
	at com.hidden.main.Main.<init>(Main.java:146) ~[?:?]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_91]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_91]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_91]
	at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_91]
	at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_91]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:76) ~[spigot-1.9.4.jar:git-Spigot-798f32d-0cd0397]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[spigot-1.9.4.jar:git-Spigot-798f32d-0cd0397]
	... 6 more