reason": "Root mapping definition has unsupported parameters:

1、在Kibana创建索引的时候报错，使用的elasticsearch版本是7.2.1版本。

 1 PUT /person
 2 {
 3   "settings": {
 4     "number_of_shards": "10",
 5     "number_of_replicas": "0",
 6     "refresh_interval": "-1"
 7   },
 8   "mappings": {
 9     "properties": {
10       "update_time": {
11         "format": "yyyy-MM-dd HH:mm:ss",
12         "type": "date"
13       },
14       "username": {
15         "type": "keyword"
16       },
17       "address": {
18         "type": "keyword"
19       }
20     }
21   }
22 }

　　报错，如下所示：

 1 {
 2     "error": {
 3         "root_cause": [{
 4