Logstash POSTFIX pipeline error

Elastic Stack
1

Hi, i have the pipeline below running in old ELK stack. The old stack have Logstash version 2.4.1. We have no problem whit this old version of logstash running this pipeline.

Now we have built new stack whit docker and i'm trying to run the same pipeline but i get some errors.

Here is the pipeline:

####################################################
### INPUT
####################################################
input {
    file {
        type => "postfix"
        path => "/var/log/maillog"
    }
}

filter {
    grok {
        #type => "postfix"
        patterns_dir => [ "/etc/logstash/postfix_grok_pattern" ]
        pattern => [
            "%{SYSLOGBASE} %{POSTFIXSMTPDCONNECTS}",
            "%{SYSLOGBASE} %{POSTFIXSMTPDACTIONS}",
            "%{SYSLOGBASE} %{POSTFIXSMTPDTIMEOUTS}",
            "%{SYSLOGBASE} %{POSTFIXSMTPDLOGIN}",
            "%{SYSLOGBASE} %{POSTFIXSMTPDCLIENT}",
            "%{SYSLOGBASE} %{POSTFIXSMTPRELAY}",
            "%{SYSLOGBASE} %{POSTFIXSMTPCONNECT}",
            "%{SYSLOGBASE} %{POSTFIXSMTP4XX}",
            "%{SYSLOGBASE} %{POSTFIXSMTP5XX}",
            "%{SYSLOGBASE} %{POSTFIXSMTPREFUSAL}",
            "%{SYSLOGBASE} %{POSTFIXSMTPLOSTCONNECTION}",
            "%{SYSLOGBASE} %{POSTFIXSMTPTIMEOUT}",
            "%{SYSLOGBASE} %{POSTFIXBOUNCE}",
            "%{SYSLOGBASE} %{POSTFIXQMGR}",
            "%{SYSLOGBASE} %{POSTFIXCLEANUP}"
        ]
        named_captures_only => true
    }
}

####################################################
### OUTPUT
####################################################
output {
  elasticsearch {
     hosts => [ "http://es01:9200" ]
     index => "postfix-%{+YYYY.MM.dd}"
     user => elastic
     password => "ABCDEF" 
        }        
    }

And this is the error that i get when start logstash docker (logstash version 7.7.0):

[2020-06-09T22:28:01,028][ERROR][logstash.agent           ] Failed to execute action {:action=>LogStash::PipelineAction::Create/pipeline_id:main, :exception=>"LogStash::ConfigurationError", :message=>"Expected one of [ \\t\\r\\n], \"#\", \"input\", \"filter\", \"output\" at line 3, column 1 (byte 69) after ", :backtrace=>["/usr/share/logstash/logstash-core/lib/logstash/compiler.rb:58:in `compile_imperative'", "/usr/share/logstash/logstash-core/lib/logstash/compiler.rb:66:in `compile_graph'", "/usr/share/logstash/logstash-core/lib/logstash/compiler.rb:28:in `block in compile_sources'", "org/jruby/RubyArray.java:2577:in `map'", "/usr/share/logstash/logstash-core/lib/logstash/compiler.rb:27:in `compile_sources'", "org/logstash/execution/AbstractPipelineExt.java:181:in `initialize'", "org/logstash/execution/JavaBasePipelineExt.java:67:in `initialize'", "/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:43:in `initialize'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline_action/create.rb:52:in `execute'", "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:342:in `block in converge_state'"]}
[2020-06-09T22:28:01,363][INFO ][logstash.agent           ] Successfully started Logstash API endpoint {:port=>9600}
[2020-06-09T22:28:06,232][INFO ][logstash.runner          ] Logstash shut down.

Any idea why is not working or how can i fix this?
Any help will be appreciated.