HELP me....d2cs.log error:

d2cs.log   error:

error1:
May 18 01:00:07 [info ] pvpgn::d2cs::server_accept: accept connection from 185.216.140.17
May 18 01:00:07 [info ] pvpgn::d2cs::d2cs_conn_create: created session=3 socket=392 (3 current connections)
May 18 01:00:07 [error] pvpgn::d2cs::d2cs_handle_init_packet: got bad connection class 3
May 18 01:00:07 [info ] pvpgn::d2cs::d2cs_conn_destroy: [392] closed connection 3 (2 left)

error2:
May 18 09:52:58 [info ] pvpgn::d2cs::game_add_character: added character PURE to game Asfa (1 total)
May 18 09:57:52 [info ] pvpgn::d2cs::game_destroy: game Aaas removed from game list (1 left)
May 18 10:13:06 [info ] pvpgn::d2cs::server_accept: accept connection from 93.174.93.33
May 18 10:13:06 [info ] pvpgn::d2cs::d2cs_conn_create: created session=23 socket=392 (3 current connections)
May 18 10:13:06 [error] pvpgn::d2cs::d2cs_handle_init_packet: got bad connection class 3
May 18 10:13:06 [info ] pvpgn::d2cs::d2cs_conn_destroy: [392] closed connection 23 (2 left)
May 18 10:26:12 [info ] pvpgn::d2cs::d2ladder_readladder: ladder file loaded successfully (28 types 35 maxtype)
May 18 10:31:35 [info ] pvpgn::d2cs::game_del_character: removed character PURE from game Asfa (0 left)
May 18 10:31:36 [info ] pvpgn::d2cs::server_accept: accept connection from 111.11.103.115
May 18 10:31:36 [info ] pvpgn::d2cs::d2cs_conn_create: created session=24 socket=392 (3 current connections)
May 18 10:31:36 [info ] pvpgn::d2cs::on_d2cs_initconn: [392] client initiated d2cs connection
May 18 10:31:36 [info ] pvpgn::d2cs::on_client_loginreq: got client (*buruyishi) login request