java.lang.UnsupportedOperationException: This method is in the sun.* namespace so it is not a supported, public interface. The 7u40 release notes describe a temporary mechanism to reenable the historical functionality of this method. Update code to function properly and this method will be removed without further warning in a subsequent 7 update release.
	at sun.reflect.Reflection.getCallerClass(Reflection.java:71)
	at ch.qos.logback.classic.spi.PackagingDataCalculator.<clinit>(PackagingDataCalculator.java:42)
	at ch.qos.logback.classic.spi.ThrowableProxy.getPackagingDataCalculator(ThrowableProxy.java:135)
	at ch.qos.logback.classic.spi.ThrowableProxy.calculatePackagingData(ThrowableProxy.java:144)
	at ch.qos.logback.classic.spi.LoggingEvent.<init>(LoggingEvent.java:127)
	at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:447)
	at ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:403)
	at ch.qos.logback.classic.Logger.debug(Logger.java:526)