Lost connection in logstash forwarder when addind patterns and grok filters

Elastic Stack Logstash
1

i work with zimbra i have created a grok filter for mailbox.log and a pattern file

i have put the filter file called zimbra_mailbox.conf in /etc/logstash/conf.d/
and i have created a directory called patterns in /etc/logstash/ and puted the pattern file into it

and i made this commande chown logstash:logstash /etc/logstash/patterns/zimbra

but when i open logsatsh-forwader.err to see how the transfer of log is going but i get lost connection connection failure :frowning:
could you help me please to know where is my problem

2

Logstash forwarder is no longer supported, please upgrade to filebeat.

3

Also, please don't post the same thing in different categories - Lost connection when adding filter files and patterns in logstash