历史聊天记录获取

http://a1.easemob.com/1102180320228426/chatdemo/chatmessages/2018032213
聊天记录获取，总是一下resonse：
{
    "error": "storage_object_not_found",
    "timestamp": 1521703061974,
    "duration": 0,
    "exception": "org.apache.usergrid.rest.exceptions.StorageObjectNotFoundException",
    "error_description": "Failed to find chat message history download url for appkey: 1102180320228426#chatdemo, time: 2018032213"
}
 
但确实是聊天了