Logstash 7.8 doesn't re-parse existing file

Elastic Stack Logstash
7

Thanks Badger.

My JSON file is like below, seems it can't be parsed to JSON by file plugin. For the multi line json document in xxx.json file, is there any idea?

{
  "array": [
    1,
    2,
    3
  ],
  "boolean": true,
  "color": "gold",
  "null": null,
  "number": 123,
  "object": {
    "a": "b",
    "c": "d"
  },
  "string": "Hello World"
}