HTML book content creator started

Detecting book name: safeav-handson

Loading ToC from en/safeav/toc

Generating HTML source... (working ...)

Converting main content to PDF... (working ...)

Removing ad page... (working ...)

Cover file not found: /data/book/src/safeav-handson-cover.pdf

Back file not found: /data/book/src/safeav-handson-back.pdf

PDF merge failed - both cover and back files are missing.