I have installed Splunk Add-on for Tenable, and currently using the scripted input to ingest .nessus file.
I have used the default settings which the default input folder is $SPLUNK_HOME\etc\apps\Splunk_TA_nessus\spool.
When I copied in the .nessus files. I saw the files disappeared, and files are created at $SPLUNK_HOME\var\spool\splunk.
But when I check my index, there is no data there. I search the _internal for the files status, below is what I got: