18:37:36 [WARNING] Plugin performed restricted action, please inform them to use proper API methods: Illegal thread group access
java.security.AccessControlException: Plugin violation: Illegal thread group access
	at net.md_5.bungee.BungeeSecurityManager.checkRestricted(BungeeSecurityManager.java:39)
	at net.md_5.bungee.BungeeSecurityManager.checkAccess(BungeeSecurityManager.java:62)
	at java.lang.ThreadGroup.checkAccess(Unknown Source)
	at java.lang.Thread.init(Unknown Source)
	at java.lang.Thread.init(Unknown Source)
	at java.lang.Thread.<init>(Unknown Source)
	at com.imaginarycode.minecraft.bungeejson.impl.httpserver.NettyBootstrap.<init>(NettyBootstrap.java:36)
	at com.imaginarycode.minecraft.bungeejson.BungeeJSONPlugin.<init>(BungeeJSONPlugin.java:40)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at net.md_5.bungee.api.plugin.PluginManager.enablePlugin(PluginManager.java:298)
	at net.md_5.bungee.api.plugin.PluginManager.loadPlugins(PluginManager.java:205)
	at net.md_5.bungee.BungeeCord.start(BungeeCord.java:244)
	at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:54)
	at net.md_5.bungee.Bootstrap.main(Bootstrap.java:15)