使用datax做mysql到mysql的数据迁移 报错ClassCastException

报java.lang.String cannot be cast to com.alibaba.fastjson.JSONObject错误

{ "job": { "setting": { "speed": { "channel": 1 } }, "content": [ { "reader": { "name": "streamreader", "parameter": { "username": "root", "password": "ACB42efef6pzVN", "connection": [ { "table": [ "doc_log" ], "jdbcUrl": "jdbc:mysql://localhost:4000/shop_data" } ], "column" : [ "remark", "owner_name" ],

                }
            },
            "writer": {
                "name": "mysqlwriter",
                "parameter": {
                    "username": "root",
                    "password": "ACB42efef6pzVN",
                    "column": [
						{
						    "name":"owner_name",
							"type": "STRING"
						},
						{
						    "name":"remark",
							"type":"STRING"
						}
					
                    ],
                    "connection": [
                        {
                            "jdbcUrl": 
                                "jdbc:mysql://localhost:4000/shop_data",
                            "table": [
                                "doc_log_copy1"
                            ]
                        }
                    ]
                }
            }
        }
    ]
}

}