When attempting to import via the Automic Web Interface (AWI), the following exception occurs:
Invocation of method uploadFailed in com.uc4.ecc.framework.commons.upload.ExtendedUpload$3 failed.com.vaadin.event.ListenerMethod$MethodException
Release : 12.3
Component : Automic Web Interface
Currently the root cause is undetermined as it was resolved with a restart of the AWI web server (tomcat).
If you see this behavior persist through a restart, please set tracing:
Afterwards, open a case with Support and send in all logs and trace.