invalid composite mappings for [logs-fortinet.fortigate.event] about fortinet-2-elasticsearch HOT 7 OPEN

{
  "error": {
    "root_cause": [
      {
        "type": "illegal_argument_exception",
        "reason": "composable template [logs-fortinet.fortigate.event] template after composition with component templates [ecs-base, ecs-user, ecs-user_agent, ecs-observer, ecs-destination, ecs-source, ecs-network, ecs-error, ecs-url, ecs-rule, ecs-data_stream, ecs-organization, ecs-ecs, ecs-host, logs-fortinet.fortigate.event@ilm, strings_as_keyword@mappings, auto_expand_replicas@settings, refresh_interval@settings, logs-fortinet.fortigate@mappings, ecs-log-modified, ecs-event-modified, ecs-file-modified, synthetic_source@mappings] is invalid"
      }
    ],
    "type": "illegal_argument_exception",
    "reason": "composable template [logs-fortinet.fortigate.event] template after composition with component templates [ecs-base, ecs-user, ecs-user_agent, ecs-observer, ecs-destination, ecs-source, ecs-network, ecs-error, ecs-url, ecs-rule, ecs-data_stream, ecs-organization, ecs-ecs, ecs-host, logs-fortinet.fortigate.event@ilm, strings_as_keyword@mappings, auto_expand_replicas@settings, refresh_interval@settings, logs-fortinet.fortigate@mappings, ecs-log-modified, ecs-event-modified, ecs-file-modified, synthetic_source@mappings] is invalid",
    "caused_by": {
      "type": "illegal_argument_exception",
      "reason": "invalid composite mappings for [logs-fortinet.fortigate.event]",
      "caused_by": {
        "type": "illegal_argument_exception",
        "reason": "field [fgt.age] of type [long] doesn't support synthetic source because it ignores malformed numbers"
      }
    }
  },
  "status": 400
}