ElasticSearch 6.2.3同义词配置报错

Mapping从配置文件读取的：
"typename":{
    "properties": {
        "title": {
            "type": "text"
            "index": "analyzed"
            "analyzer": "by_max_word"
            "search_analyzer": "by_smart"
        }
    }
}
，
在配置好Mapping后，执行这个方法
IndexResponse response = client
.prepareIndex("myindex","custom")
.setSource(
jsonBuilder().startObject()
.field("title", "夜神了，番茄宫谁在写诗，已经有20年历史了")
.endObject()).get();
报错了：java.lang.IllegalArgumentException: Rejecting mapping update to [myindex] as the final mapping would have more than 1 type。
遇过这个问题的同学可以帮忙解答下该怎么解决么