执行_search时报错

ES版本：7.3.2

1.在学习Elasticsearch的_search命令时报错，返回信息如下：

{
    "error": {
        "root_cause": [
            {
                "type": "parsing_exception",
                "reason": "Unknown key for a VALUE_STRING in [first_name].",
                "line": 2,
                "col": 14
            }
        ],
        "type": "parsing_exception",
        "reason": "Unknown key for a VALUE_STRING in [first_name].",
        "line": 2,
        "col": 14
    },
    "status": 400
}

2.解决方法：是因为我的请求body里包含了数据：

{
"first_name":"Douglas",
"last_name":"Fir",
"age":35,
"about":"I like to build cabinets",
"interests":["forestry"]
    
	
}

3.删除body内的内容，请求成功：