FATAL : FATAL: Failed to open server socket. Reason: Address already in use java.net.BindException: Address already in use
        at sun.nio.ch.Net.bind(Native Method)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:119)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:52)
        at com.l2jserver.mmocore.network.SelectorThread.openServerSocket(SelectorThread.java:127)
        at net.sf.l2j.loginserver.L2LoginServer.startServer(L2LoginServer.java:141)
        at net.sf.l2j.loginserver.L2LoginServer.<init>(L2LoginServer.java:131)
        at net.sf.l2j.loginserver.L2LoginServer.main(L2LoginServer.java:75)