How do I restrict size of atlassian-bitbucket.log log file? Version 7.5.1

[William Crossland]

According to https://confluence.atlassian.com/bitbucketserverkb/configure-bitbucket-server-logging-779171678.html we should be able to set maxFileSize at <install dir>\app\WEB-INF\classes\logback-spring.xml however we receive an error during startup:

This is how the configuration block looks in logback-spring.xml:

<appender name="bitbucket.application" class="ch.qos.logback.core.rolling.RollingFileAppender">
<encoder>
<charset>UTF-8</charset>
<pattern>${log.format}</pattern>
</encoder>
<file>${log.dir}/atlassian-bitbucket.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${log.dir}/atlassian-bitbucket-%d.log</fileNamePattern>
<maxFileSize>25MB</maxFileSize>
<maxHistory>31</maxHistory>
</rollingPolicy>
</appender>

This is the error in the atlassian-bitbucket.log:

2020-10-01 15:03:23,931 ERROR [main] o.s.boot.SpringApplication Application run failed
java.lang.IllegalStateException: Logback configuration error detected: 
ERROR in ch.qos.logback.core.joran.spi.Interpreter@32:34 - no applicable action for [maxFileSize], current ElementPath is [[configuration][appender][rollingPolicy][maxFileSize]]
at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:169)
at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithConventions(AbstractLoggingSystem.java:80)
at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:60)
at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java:118)
at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:313)
at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:288)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:246)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:223)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:76)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:345)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
at com.atlassian.bitbucket.internal.boot.BitbucketServerApplication.start(BitbucketServerApplication.java:275)
at com.atlassian.bitbucket.internal.boot.BitbucketServerApplication.main(BitbucketServerApplication.java:87)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
at com.atlassian.bitbucket.internal.launcher.BitbucketServerLauncher.start(BitbucketServerLauncher.java:151)
at com.atlassian.bitbucket.internal.launcher.BitbucketServerLauncher.main(BitbucketServerLauncher.java:99)
... 4 frames trimmed