array(3) {
  ["code"]=>
  int(2000)
  ["msg"]=>
  array(7) {
    ["root_cause"]=>
    array(1) {
      [0]=>
      array(2) {
        ["type"]=>
        string(26) "illegal_argument_exception"
        ["reason"]=>
        string(350) "Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [create_time] in order to load field data by uninverting the inverted index. Note that this can use significant memory."
      }
    }
    ["type"]=>
    string(32) "search_phase_execution_exception"
    ["reason"]=>
    string(17) "all shards failed"
    ["phase"]=>
    string(5) "query"
    ["grouped"]=>
    bool(true)
    ["failed_shards"]=>
    array(1) {
      [0]=>
      array(4) {
        ["shard"]=>
        int(0)
        ["index"]=>
        string(13) "cloud_ppt_app"
        ["node"]=>
        string(22) "n0p8vY8gTPOLe-dWzVPZ9Q"
        ["reason"]=>
        array(2) {
          ["type"]=>
          string(26) "illegal_argument_exception"
          ["reason"]=>
          string(350) "Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [create_time] in order to load field data by uninverting the inverted index. Note that this can use significant memory."
        }
      }
    }
    ["caused_by"]=>
    array(3) {
      ["type"]=>
      string(26) "illegal_argument_exception"
      ["reason"]=>
      string(350) "Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [create_time] in order to load field data by uninverting the inverted index. Note that this can use significant memory."
      ["caused_by"]=>
      array(2) {
        ["type"]=>
        string(26) "illegal_argument_exception"
        ["reason"]=>
        string(350) "Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [create_time] in order to load field data by uninverting the inverted index. Note that this can use significant memory."
      }
    }
  }
  ["data"]=>
  array(0) {
  }
}