We need to add the following loggers:

<logger name="org.springframework.core.io.support.PropertiesLoaderSupport" additivity="false">
        <level value="INFO" />
        <appender-ref ref="application_log" />
</logger>

<logger name="org.springframework.beans.factory.config.LoggingPropertyPlaceholderConfigurer" additivity="false">
        <level value="info" />
        <appender-ref ref="application_log" />
</logger>


If we don't add those two loggers then our properties file isn't sent to the log file, making it difficult to figure out exactly what is going on when the application starts.