Log files don't rotate if fileNamePattern contains directory name and file name with date pattern.

<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">

<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">

<Pattern>%level %date [%thread] [%file:%line] %msg%n</Pattern>

</encoder>

<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

<fileNamePattern>/data/logs/api/app/%d{yyyy-MM-dd}/api.%d{yyyy-MM-dd-HH-mm}.log</fileNamePattern>

<maxHistory>240</maxHistory>

</rollingPolicy>

</appender>

It starts working fine , if date formatted directory is removed from fileNamePattern.

<fileNamePattern>/data/logs/api/app/api.%d{yyyy-MM-dd-HH-mm}.log</fileNamePattern>