Please help, Logstash can not parse field value to created dynamic index

Elastic Stack Logstash
7 
{
   "_index": "p2c2p123-host1.testhostclub.local-2019.04.04-mxq1",
   "_type": "doc",
   "_id": "7Y4R52kB8zAPqq0q7qMM",
   "_version": 1,
   "_score": null,
   "_source": {
   "host": {
       "os": {
           "version": "2018.03",
          "platform": "amzn",
          "name": "Amazon Linux AMI",
          "family": ""
       },
       "architecture": "x86_64",
       "name": "ip-xxx-xxx-xxx-xxx",
       "containerized": true
      },
     "timestamp": "2019-04-04 06:38:07",
     "prospector": {
     "type": "log"
     },
     "@timestamp": "2019-04-04T06:38:08.853Z",
"tags": [
  "p2c2p123",
  "beats_input_codec_plain_applied"
],
"meta": {
  "cloud": {
    "provider": "ec2",
    "instance_id": "<instance_id>",
    "region": "<region>",
    "machine_type": "c5.2xlarge",
    "availability_zone": "<availability_zone>"
     }
  },
    "@version": "1",
    "message": "[2019-04-04 06:38:07] report.DEBUG:",
   "offset": 384412217,
   "custom_field_hostname": "host1.testhostclub.local",
    "input": {
      "type": "log"
    },
    "custom_field_logfilename": "p2c2p123",
    "log": {
       "file": {
        "path": "/home/ec2-user/app/current/var/log/p2c2p123.log"
      }
    },
     "beat": {
         "version": "6.6.1",
         "name": "ip-xxx-xxx-xxx-xxx",
        "hostname": "ip-xxx-xxx-xxx-xxx"
    },
       "source": "/home/ec2-user/app/current/var/log/p2c2p123.log",
       "CLASS": "report",
      "loglevel": "DEBUG"
   },
   "fields": {
      "@timestamp": [
      "2019-04-04T06:38:08.853Z"
    ]
 },
  "sort": [
     1554359888853
      ]
   }