Viewing Logstash logger output

Could anyone direct me to where I can see the logger.warn statements (specifically the one on line 79 of split)

I've tried looking at the file generated by:

bin/logstash --verbose --log log.txt -f PATH_TO_FILE.conf

But it doesn't have any of the logger statements although an error occurred...

What version of the split filter are you using?

According to bin/logstash-plugin list --verbose

The plugin version is logstash-filter-split (2.0.5)

That message is only logged in v3.1.1 and later.

Thanks for the heads up.