add webClient is nil check

serverCommunication/minecraft.go

@@ -40,6 +40,11 @@ func HandleMinecraftMessage(conn *websocket.Conn, msg []byte) {
 			if queueMsg.OriginDest == kraProtocol.DestVoice || queueMsg.OriginDest == kraProtocol.DestMobile {
 				webClient := GetWebClientByUuid(playerUuid)
 
+				if webClient == nil {
+					logger.Minecraft.Warn("webClient is nil")
+					return
+				}
+
 				raw := kraProtocol.EncodeWebMessage(kraProtocol.StatusReply, queueMsg.OriginCmdID, cmdNumber, args)
 
 				var err error