spring - SpringBoot Logback configuration error - Empty or null pattern

Question

One of my spring boot applications suddenly stopped working, after server restart. The application is failing to start, these are the messages from log file

ERROR o.s.boot.SpringApplication - Application startup failed 
java.lang.IllegalStateException: Logback configuration error detected: 
ERROR in ch.qos.logback.classic.PatternLayout("") - Empty or null pattern.

Server: WebSphere Application Server

Spring Boot version: 1.5.21.RELEASE

logback-spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<include resource="org/springframework/boot/logging/logback/defaults.xml"/>
<include resource="org/springframework/boot/logging/logback/console-appender.xml"/>
<appender name="ROLLING-FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<encoder>
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
</encoder>
<file>app.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>app.log.%d{yyyy-MM-dd}.log</fileNamePattern>
</rollingPolicy>
</appender>
<root level="INFO">
<appender-ref ref="ROLLING-FILE"/>
</root>
</configuration>

I tried setting the log parameters in the application properties file but still doesn't work, properties like logging.path, logging.file, logging.pattern.file

The application used to work fine, no code changes were made for last few months, but after server restart it stopped working, application works fine in my local machine.

question from:https://stackoverflow.com/questions/65915773/springboot-logback-configuration-error-empty-or-null-pattern

Answer 1

Waitting for answers