Minecraft votifier error

plugman reload votifier

[INFO] [Votifier] Disabling Votifier v2.4.1

[INFO] [Votifier] Votifier disabled.

[INFO] [Votifier] Enabling Votifier v2.4.1

[INFO] [Votifier] Loaded token for website: default

[INFO] [Votifier] ------------------------------------------------------------------------------

[INFO] [Votifier] Votifier protocol v1 parsing has been disabled. Most voting websites do not

[INFO] [Votifier] currently support the modern Votifier protocol in NuVotifier.

[INFO] [Votifier] ------------------------------------------------------------------------------

[INFO] [Votifier] Method none selected for vote forwarding: Votes will not be received from a forwarder.

[INFO] [PlugMan] Votifier has been reloaded.

[INFO] Votifier enabled on socket /0.0.0.0:21217.

[WARNING] 33779821 [Votifier NIO worker] ERROR com.vexsoftware.votifier.netty.util.concurrent.DefaultPromise.rejectedExecution - Failed to submit a listener notification task. Event loop shut down?

[WARNING] java.lang.IllegalAccessError: Class com/vexsoftware/votifier/netty/util/concurrent/DefaultThreadFactory illegally accessing "package private" member of class com/vexsoftware/votifier/netty/util/concurrent/DefaultThreadFactory$DefaultRunnableDecorator

[WARNING] at com.vexsoftware.votifier.netty.util.concurrent.DefaultThreadFactory.newThread(DefaultThreadFactory.java:108)

[WARNING] at com.vexsoftware.votifier.netty.util.concurrent.GlobalEventExecutor.startThread(GlobalEventExecutor.java:217)

[WARNING] at com.vexsoftware.votifier.netty.util.concurrent.GlobalEventExecutor.execute(GlobalEventExecutor.java:211)

[WARNING] at com.vexsoftware.votifier.netty.util.concurrent.DefaultPromise.safeExecute(DefaultPromise.java:760)

[WARNING] at com.vexsoftware.votifier.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:428)

[WARNING] at com.vexsoftware.votifier.netty.util.concurrent.DefaultPromise.setSuccess(DefaultPromise.java:95)

[WARNING] at com.vexsoftware.votifier.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:897)

[WARNING] at java.lang.Thread.run(Thread.java:813)