From the following docs, it ia confirmed that the table information of the plugin trace log is "plugintracelog".

This time, when the log was registered in the plug-in trace log, the workflow was set so that the mail was sent to Outlook, but we found out that the flow did not work.

When you want to set up the above workflow, the trigger "plugintracelog" table will not work, so please let it work in the future.