I get ClassNotFoundException when using your log4j appender.

This error could means that our appender class is not found in the class path of your application. Or it could mean that you've got a typo in specifying it's name in your logging configuration. Our appenders come in lfsppaneders.jar which can be found in server /lib directory, or downloaded directly from here.

If this exception indicates some other classes, please make sure you have all required dependencies in your application classpath. For example, if you use logback, slf4j, log4j or alike, you might want to consult their documentation to see what jars need to be included.