So since I've installed JPanel, the server can't boot anymore, I do not know why. Always get the message "WARN unable to register Log4j shutdown hook because JVM is shutting down. Using Simple Logger"
WARN unable to register Log4j shutdown hook because JVM is shutting down
This just states that Log4j can't be used because the Java virtual machine is already shutting down. Log4j is only used for logging, ie to store error messages / other messages.
The real mistake is that the JVM shuts down prematurely. Somewhere in the logs you should be able to find the cause. Probably something can't be loaded correctly.
I've already watched, but logs are no longer stored if a mistake comes with me? I do not know why
All I know is that the server shuts down as soon as JPanel launches the WebSocket
But I can't delete JPanel unfortunately. Since it is important for the server
Have solved it, on the Internet was something about SSL and I have simply put it on false, it was ok again
SSL stands for Secure Sockets Layer.
This will probably have deactivated encryption. But do not mind.
