I try to export a dashboard that has results with trellis. I couldnt export them.
It says, "PDF export is not available for visualizations using trellis layout."
Sorry, but that's an accurate error message. Trellis layout does not support PDF export. If you want PDF export, you'll have to refactor the dashboard to not use trellis.
I got a same problem, after I read this Answer i have one more quetion this trellis layout feature Supported on Future Splunk Versions or Not..??