Filebeat - ERR Failed to publish events caused by: EOF

Elastic Stack Beats
5

I tried to enable AND disable on beat side (default is off), yet I'm still getting same error from logstash.

logstash: ssl set to "true"

$ cat 02-beats-input.conf 
input {
  beats {
    port => 5044
    ssl => true
    ssl_certificate => "/etc/pki/tls/certs/logstash-beats.crt"
    ssl_key => "/etc/pki/tls/private/logstash-beats.key"
  }
}
$

filebeat: ssl is on

$ grep -vE '^?#' /etc/filebeat/filebeat.yml | grep -E ':|-'
filebeat.prospectors:
- input_type: log
  paths:
    - /var/log/all.log
output.logstash:
  hosts: ["localhost:5044"]
$