Issue Summary

New PDF export is failing if there are comment tags in PDF style sheet.

Steps to Reproduce

1. Navigate to Space settings- > PDF look and feel and insert the below CSS.(Screenshot_1.png)

@page
{
/* Landscape */
size: 11in 8.5in;
}

2.  Now take page or space export in PDF format. It will fail( Screenshot_2.png)

Expected Results

The PDF export should fallback to the previous version or given an appropriate error message

Actual Results

PDF export gives "Unable to export PDF" error.

Workaround

Remove the comment tags in the style sheet and try the export again. Another option is to export the page in Word format and save it as PDF.