Turning on Debug Logging
In the /opt/mango/classes folder you will see two files:
debug-log4j2.xml
log4j2.xml
Rename log4j2.xml to something like standard-log4j2.xml
Rename debug-log4j2.xml to log4j2.xml
Restart Mango.
Don’t forget to change it back as this will create very big log files and add additional load on the system.
Learn more about other debug options and Log4J Settings in Mango here.