Refer to the exhibit.

To log all the errors raised by the VM Connector, the developer needs to add an async logger with the name ‘org.mule.extension.vm’ and the level ‘ERROR’ inside the appenders tag of the log4j2.xml file. This will enable logging all error-level events generated by the VM Connector to the console appender. References:https://docs.mulesoft.com/mule-runtime/4.3/logging-in-mule#configuring-custom-logging-settings