title: elasticsearch 5: Unknown key for a START_OBJECT in [filters]
body: <p>Im trying to migrate from elasticsearch 1.7 to 5.1 and I have a problem:</p>
  
  <pre><code>curl -XGET http://127.0.0.1:9200/openlist_ru-formulars/formular/_search?pretty=true -d '{
      "filter": [
          { "range": { "born": { "gte": "1874" }}}
      ]
  }'
  </code></pre>
  
  <p>and answer:</p>
  
  <pre><code>{
    "error" : {
      "root_cause" : [
        {
          "type" : "parsing_exception",
          "reason" : "Unknown key for a START_OBJECT in [filters].",
          "line" : 2,
          "col" : 12
        }
      ],
      "type" : "parsing_exception",
      "reason" : "Unknown key for a START_OBJECT in [filters].",
      "line" : 2,
      "col" : 12
    },
    "status" : 400
  }
  </code></pre>
  
  <p>I used google all the day but still have no answer what it means. Please help.</p>