APP 运行的时候回台一直打印下面这段日志 导致app其他操作无法进行

log: level: 1, area: 1, ChatClient::notifyRosterEvent complete
[2017/10/18 14:08:26:350]: log: level: 1, area: 1, RosterEvent: 
{ operation : REMOVE, from : 1159170216115585#seefood_u49345483956686848@easemob.com, tos : [ 1159170216115585#seefood_u49999513380851712@easemob.com/ios_6a179ee0-bdc3-4484-8053-063e834ad51e ], roster_ver : C7AB1081911CCA21FBA9AD2880670C5BCE58699E }
[2017/10/18 14:08:26:350]: doHandleRosterEvent: 3 from user: u49345483956686848 ver: C7AB1081911CCA21FBA9AD2880670C5BCE58699E
[2017/10/18 14:08:26:350]: EMChatManager::removeConversation: u49345483956686848 isRemoveMessages: 1
[2017/10/18 14:08:26:350]: EMConversationManager::removeConversation: u49345483956686848 isRemoveMessages: 1
[2017/10/18 14:08:26:350]: removeConversation : conversationId u49345483956686848 : isRemoveMessages : 1
[2017/10/18 14:08:26:351]: EMDatabase::clearAllConversationMessages: u49345483956686848
[2017/10/18 14:08:26:352]: deleteContact(): u49345483956686848
[2017/10/18 14:08:26:352]: log: level: 1, area: 1, SEND:
{ verison : MSYNC_V1, compress_algorimth : 0, command : SYNC, payload : { meta : { id : 126670, to : @easemob.com, ns : ROSTER, payload : { operation : REMOVE, tos : [ 1159170216115585#seefood_u49345483956686848 ], reason : , bi_direction : 0 } } } }