LogstashEncoder is ignored

[PabloAlbertengoNemo]

Hi guys!

I'm having troubles using the encoder net.logstash.logback.encoder.LogstashEncoder in combination with an appender for write to files.
Using the encoder with the ConsoleAppender works correctly
The problem basically is that the encoder is ignored-

Below is my configuration file
Do you know what could be happening?

Thanks in advance,
Pablo
`

    <appender name="SIFT-ROLLING-SUPPLIER" class="ch.qos.logback.classic.sift.SiftingAppender">
            <encoder class="net.logstash.logback.encoder.LogstashEncoder"/>
            <discriminator>
                    <Key>userLogin</Key>
                    <DefaultValue>unknown</DefaultValue>
            </discriminator>
            <sift>
                    <appender name="FILE-${userLogin}" class="ch.qos.logback.core.rolling.RollingFileAppender">
                    		<encoder class="net.logstash.logback.encoder.LogstashEncoder"/>
                            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                                    <FileNamePattern>${LOGS_HOME}/suppliers/%d{yyyy-MM/dd, aux}/${userLogin}.%d.log</FileNamePattern>
                                    <MaxHistory>30</MaxHistory>
                            </rollingPolicy>
                            <layout class="ch.qos.logback.classic.PatternLayout">
                                    <Pattern>%msg%n</Pattern>
                            </layout>
                            <prudent>true</prudent>
                    </appender>
            </sift>
    </appender>
    <appender name="jsonConsoleAppender" class="ch.qos.logback.core.ConsoleAppender">
        <encoder class="net.logstash.logback.encoder.LogstashEncoder"/>
    </appender>
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
            <layout class="ch.qos.logback.classic.PatternLayout">
                    <Pattern>%d{HH:mm:ss.SSS} [%X{userLogin}] %-5level %msg%n</Pattern>
            </layout>
    </appender>       

    <logger name="com.zaxxer.hikari" level="INFO" />
    <logger name="net.nemogroup.audit.logging.AuditLogger" level="trace" additivity="false">
        <appender-ref ref="SIFT-ROLLING-SUPPLIER"/>
    </logger>
    <root level="INFO">
            <appender-ref ref="STDOUT" />
    </root>

`

[PabloAlbertengoNemo]

Sorry,
this line was the problem:
<layout class="ch.qos.logback.classic.PatternLayout"> <Pattern>%msg%n</Pattern> </layout>