Erreur d'importation avec logstash sous linux

Elastic Stack Logstash
20

Problem solved.
my final code is:

input{
        file {
        path => ["/home/katia/FichiersLog/SAMIA/gest1.txt"]
                start_position => beginning
                codec => multiline {
                        charset => "BINARY"
                        pattern => "^%{YEAR}%{MONTHNUM2}%{MONTHDAY}"
                        negate => true
                        what => previous
                }
    }
}

thank you very much for your time.