Help with errors

[scantraxx7777]

These errors are always appearing. The game server is running without problems, or at least has not been found yet.

Network game server

Client: CONNECTED IP: ******** - Failed reading: [C] ProtocolVersion - Server Version: 1160:1164M
java.nio.BufferUnderflowException: null
    at java.base/java.nio.Buffer.nextGetIndex(Buffer.java:721)
    at java.base/java.nio.HeapByteBuffer.getInt(HeapByteBuffer.java:498)
    at l2.commons.net.nio.ReceivablePacket.readD(Unknown Source)
    at l2.gameserver.network.l2.c2s.ProtocolVersion.readImpl(Unknown Source)
    at l2.gameserver.network.l2.c2s.L2GameClientPacket.read(Unknown Source)
    at l2.commons.net.nio.impl.SelectorThread.parseClientPacket(Unknown Source)
    at l2.commons.net.nio.impl.SelectorThread.tryReadPacket2(Unknown Source)
    at l2.commons.net.nio.impl.SelectorThread.readPacket(Unknown Source)
    at l2.commons.net.nio.impl.SelectorThread.run(Unknown Source)

Linux

device wlan0 entered promiscuous mode
device wlan0 left promiscuous mode