Grab a copy of the full Draw Guide v3.4 to check for missing figures,
missing or incorrect references, other problems and errors.
http://www.odfauthors.org/libreoffice/english/draw-guide/published-lo-3.4/dg3.4-draw-guide-full-book-pdf/view
or
https://wiki.documentfoundation.org/images/e/eb/DG3400-DrawGuideLO34.pdf
--Jean