jmessage.getFriends()取到的好友avatarThumbPath为空

我在使用jmessage_flutter: 0.5.0
在android下，正常。
在ios下，取到的好友头像为空

 | JIGUANG | D - [JMSGFriendManager+JMSGInner] Action - p_getgetFriendListCompletionHandler
 | JIGUANG | D - [JMSGUserHttp] Actioin - getFriendListWithParameter:
flutter: [{"type":"user","gender":"unknown","username":"xchao","appKey":"key","nickname":"xchao","avatarThumbPath":"","birthday":"","region":"","signature":"","address":"","noteName":"","noteText":"","isNoDisturb":false,"isInBlackList":false,"isFriend":true,"extras":{}}]
| JMessage | iOS | Action - handleMethodCall:: method =getUserInfo