Logstash doesn't parse new files in directory

Elastic Stack Logstash
4

I don't see any need for type => "bdu" and remove from output

input {
  file {
    path => "/home/user/Documents/bdu/*.json" # is it documents or Documents?
    start_position => "beginning"
    sincedb_path => "/dev/null"
    codec => "json"
  }
}
output {
stdout { codec => rubydebug }
}

First start with debug, then go to opensearch.If this is multiline JSON, you have to use the multiline codec, check the sample.