Printing stack trace in readable format using logstash - Newline character not processed by logback logstash JSON appender in Spring boot logger - logstash

Question

I am trying to print the exception stack trace as:-
log.error("Error is {}" , ArrayUtils.toString(e.getStackTrace()));
This prints the entire stack trace in a single line.
I tried replacing every terminal "," character with "\n" but that doesnt work.
I also tried:
log.error("Error is \n {}" , ArrayUtils.toString(e.getStackTrace()));
But instead of printing on new line, it just prints the newline character as-is:
Error is \n java.base. ..... ,\njava.something.....
So i want to know how i can include newline in logger... along with the json appender
logback-spring.xml:
<configuration>
<!-- logs to /tmp/spring.log by default -->
<property name="LOG_FILE" value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}spring.log}"/>
<include resource="org/springframework/boot/logging/logback/defaults.xml"/>
<include resource="org/springframework/boot/logging/logback/console-appender.xml"/>
<include resource="logstash-json-appender.xml"/>
<springProfile name="prod | uat | qa | int">
<root level="INFO">
<appender-ref ref="JSON_CONSOLE"/>
</root>
</springProfile>
<springProfile name="default | dev | test | junit">
<root level="INFO">
<appender-ref ref="CONSOLE"/>
</root>
</springProfile>
</configuration>
logstash-json-appender.xml
<included>
<!--
Defines a JSON formatted appender for both the console and log files.
For configuration details, see:
-->
<springProperty scope="context" name="appName" source="spring.application.name"/>
<appender name="JSON_CONSOLE" class="net.logstash.logback.appender.LoggingEventAsyncDisruptorAppender">
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<encoder class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder">
<jsonGeneratorDecorator class="net.logstash.logback.decorate.PrettyPrintingJsonGeneratorDecorator"/>
<providers>
<timestamp>
<timeZone>UTC</timeZone>
</timestamp>
<pattern>
<pattern>
{
"level": "%level",
"service": "${appName:-}",
"traceId": "%X{traceId:-}",
"spanId": "%X{spanId:-}",
"parentSpanId": "%X{parentSpanId:-}",
"pid": "${PID:-}",
"thread": "%thread",
"class": "%logger{40}",
"message": "%message"
}
</pattern>
</pattern>
</providers>
</encoder>
</appender>
</appender>
<appender name="JSON_FILE" class="net.logstash.logback.appender.LoggingEventAsyncDisruptorAppender">
<appender class="ch.qos.logback.core.rolling.RollingFileAppender">
<encoder class="net.logstash.logback.encoder.LogstashEncoder">
<jsonGeneratorDecorator class="net.logstash.logback.decorate.PrettyPrintingJsonGeneratorDecorator"/>
<timeZone>UTC</timeZone>
</encoder>
<!-- use the default spring boot conventions here, but leverage a different encoder -->
<file>${LOG_FILE}</file>
<rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
<fileNamePattern>${LOGBACK_ROLLINGPOLICY_FILE_NAME_PATTERN:-${LOG_FILE}.%d{yyyy-MM-dd}.%i.gz}</fileNamePattern>
<cleanHistoryOnStart>${LOGBACK_ROLLINGPOLICY_CLEAN_HISTORY_ON_START:-false}</cleanHistoryOnStart>
<maxFileSize>${LOGBACK_ROLLINGPOLICY_MAX_FILE_SIZE:-10MB}</maxFileSize>
<totalSizeCap>${LOGBACK_ROLLINGPOLICY_TOTAL_SIZE_CAP:-0}</totalSizeCap>
<maxHistory>${LOGBACK_ROLLINGPOLICY_MAX_HISTORY:-7}</maxHistory>
</rollingPolicy>
</appender>
</appender>
</included>