Plugin się nie ładuje

[18:02:54] [Server thread/ERROR]: Could not load 'plugins/BlackEvent.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.ExceptionInInitializerError
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:139) ~[Spigot-1.14.4.jar:git-Spigot-e5b1b5d-1ec1b05]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:334) ~[Spigot-1.14.4.jar:git-Spigot-e5b1b5d-1ec1b05]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:253) [Spigot-1.14.4.jar:git-Spigot-e5b1b5d-1ec1b05]
	at org.bukkit.craftbukkit.v1_14_R1.CraftServer.loadPlugins(CraftServer.java:350) [Spigot-1.14.4.jar:git-Spigot-e5b1b5d-1ec1b05]
	at net.minecraft.server.v1_14_R1.DedicatedServer.init(DedicatedServer.java:202) [Spigot-1.14.4.jar:git-Spigot-e5b1b5d-1ec1b05]
	at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:775) [Spigot-1.14.4.jar:git-Spigot-e5b1b5d-1ec1b05]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
Caused by: java.lang.ExceptionInInitializerError
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_191]
	at java.lang.Class.forName(Class.java:348) ~[?:1.8.0_191]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:59) ~[Spigot-1.14.4.jar:git-Spigot-e5b1b5d-1ec1b05]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[Spigot-1.14.4.jar:git-Spigot-e5b1b5d-1ec1b05]
	... 6 more
Caused by: java.lang.NullPointerException
	at me.blackevent.Main.<clinit>(Main.java:10) ~[?:?]
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_191]
	at java.lang.Class.forName(Class.java:348) ~[?:1.8.0_191]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:59) ~[Spigot-1.14.4.jar:git-Spigot-e5b1b5d-1ec1b05]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[Spigot-1.14.4.jar:git-Spigot-e5b1b5d-1ec1b05]
	... 6 more

package me.blackevent;

import org.bukkit.plugin.java.JavaPlugin;

import me.blackevent.Main;

public class Main extends JavaPlugin
{
	private static Main Inst;
	private static String prefix = getInst().getConfig().getString("prefix") + " ";
	
	public Main()
	{
		Inst = this;
	}
	
	public void onEnable()
	{
		FileManager.checkFiles();
	}
	
	public static Main getInst()
	{
		return Inst;
	}
	
	public static String getPrefix()
	{
		return prefix;
	}
}