查询格式错误，查询名称后没有start_object

第二条

must

{  "query": {    "bool": {      "filter": {        "bool": {          "must": [ {   "range": {     "@timestamp": {       "gt": "2017-03-21T15:37:08.595919Z",       "lte": "2017-04-21T15:52:08.595919Z"     }   } }, {   "query_string": {     "query": "_exists_: $event.supplier"   } }          ]        }      }    }  },  "sort": [    {      "@timestamp": {        "order": "asc"      }    }  ]}