Help Npc Buffer Error

[petr.plasan]

[14:31:18] ERROR Client: IN_GAME IP: 77.252.XXX.XXX Account: kame Player : XXXXX[268499218] - Failed reading: [C] RequestPledgeSetMemberPowerGrade - Server Version: ${build.revision}
java.nio.BufferUnderflowException
at java.nio.Buffer.nextGetIndex(Buffer.java:498)
at java.nio.HeapByteBuffer.getChar(HeapByteBuffer.java:253)
at l2ro.commons.net.nio.ReceivablePacket.readS(ReceivablePacket.java:49)
at l2ro.gameserver.network.clientpackets.L2GameClientPacket.readS(L2GameClientPacket.java:74)
at l2ro.gameserver.network.clientpackets.RequestPledgeSetMemberPowerGrade.readImpl(RequestPledgeSetMemberPowerGrade.java:17)
at l2ro.gameserver.network.clientpackets.L2GameClientPacket.read(L2GameClientPacket.java:28)
at l2ro.commons.net.nio.impl.SelectorThread.parseClientPacket(SelectorThread.java:411)
at l2ro.commons.net.nio.impl.SelectorThread.tryReadPacket2(SelectorThread.java:355)
at l2ro.commons.net.nio.impl.SelectorThread.readPacket(SelectorThread.java:310)
at l2ro.commons.net.nio.impl.SelectorThread.run(SelectorThread.java:182)

does anyone know this error? how can fix this ? :)

 

[kyosume]

"RequestPledgeSetMemberPowerGrade" Missing or bad packet.