bool query failing

bool query fails in 5.0 but worked in previous version

{
  "from": 0,
  "size": 10,
  "timeout": "10s",
  "query": {
    "bool": {
      "must": [
        {
          "multi_match": {
            "query": "test",
            "fields": [
              "message^1.0",
              "message.korean^1.0"
            ],
            "type": "best_fields",
            "operator": "AND",
            "slop": 0,
            "prefix_length": 0,
            "max_expansions": 50,
            "lenient": false,
            "zero_terms_query": "NONE",
            "boost": 1
          }
        },
        {
          "range": {
            "sentAt": {
              "from": "now-2M",
              "to": "now-1M",
              "include_lower": true,
              "include_upper": true,
              "boost": 1
            }
          }
        },
        {
          "term": {
            "channelId": {
              "value": "1111111111111111111",
              "boost": 1
            }
          }
        }
      ],
      "should": [
        {
          "match_phrase": {
            "message": {
              "query": "test",
              "slop": 0,
              "boost": 5
            }
          }
        },
        {
          "term": {
            "message.raw": {
              "value": "test",
              "boost": 10
            }
          }
        }
      ],
      "disable_coord": false,
      "adjust_pure_negative": true,
      "boost": 1
    }
  },
  "sort": [
    {
      "messageId": {
        "order": "desc"
      }
    }
  ],
  "track_scores": true,
  "highlight": {
    "pre_tags": [
      "<strong>"
    ],
    "post_tags": [
      "</strong>"
    ],
    "fields": {
      "message": {
        "fragment_size": 100,
        "number_of_fragments": 1
      },
      "message.korean": {
        "fragment_size": 100,
        "number_of_fragments": 1
      },
      "message.raw": {
        "fragment_size": 100,
        "number_of_fragments": 1
      },
      "link.url": {
        "fragment_size": 100,
        "number_of_fragments": 1
      },
      "file.name": {
        "fragment_size": 100,
        "number_of_fragments": 1
      }
    }
  },
  "ext": {}
}