It is possible to get more information by turning on the debug logging mode.
Turning on debug mode
Go to Settings > System > Logging and profiling
Scroll down to the Default Loggers section and click on Configure
Add the Package name of the plugin and set it's Logging Level to DEBUG, e.g. com.akelesconsulting.jira.plugins.customfield.TrafficLightCFType
Turning off debug mode
You may turn off the debug logging after you replicated the steps by
- Go back to Logging and profiling and look for the package name in the list
- Click on the OFF in the Set Logging Level to disable the logging
Getting the log files
The logs are written to a file called atlassian-jira.log which in located in the Jira Home directory.
If you are unsure of the location, you can find it from the System Info page
- Go to Settings > System > System Info, under File Paths section, check out