FreeBSD web build failed on www.freebsd.org

[World Wide Web Owner]

===> doc/articles/new-users (all)
===> doc/articles/p4-primer (all)
===> doc/articles/pam (all)
===> doc/articles/portbuild (all)
===> doc/articles/pr-guidelines (all)
===> doc/articles/problem-reports (all)
===> doc/articles/pxe (all)
===> doc/articles/rc-scripting (all)
===> doc/articles/relaydelay (all)
===> doc/articles/releng (all)
===> doc/articles/releng-packages (all)
===> doc/articles/remote-install (all)
===> doc/articles/serial-uart (all)
===> doc/articles/solid-state (all)
===> doc/articles/storage-devices (all)
===> doc/articles/version-guide (all)
===> doc/articles/vinum (all)
===> doc/articles/vm-design (all)
===> doc/articles/wp-toolbox (all)
===> doc/articles/zip-drive (all)
===> doc/books (all)
===> doc/books/arch-handbook (all)
===> doc/books/corp-net-guide (all)
===> doc/books/design-44bsd (all)
===> doc/books/dev-model (all)
===> doc/books/developers-handbook (all)
===> doc/books/faq (all)
===> doc/books/fdp-primer (all)
===> doc/books/handbook (all)
===> doc/books/pmake (all)
===> doc/books/porters-handbook (all)
Index is disabled or no index to generate.
/usr/bin/env SP_ENCODING=ISO-8859-1 /usr/local/bin/jade -V html-manifest -ioutput.html -d /w/www/build/doc/en_US.ISO8859-1/books/porters-handbook/freebsd.dsl -ifreebsd.urls.relprefix.4 -V %generate-legalnotice-link% -V %generate-docformat-navi-link% -ioutput.html.images   -D /w/www/build/doc/en_US.ISO8859-1/books/porters-handbook/../../../share/images/books/porters-handbook -D /usr/obj/w/www/build/doc/en_US.ISO8859-1/books/porters-handbook -c /w/www/build/doc/en_US.ISO8859-1/share/sgml/catalog -c /w/www/build/doc/share/sgml/catalog -c /usr/local/share/sgml/docbook/dsssl/modular/catalog -c /usr/local/share/sgml/iso8879/catalog -c /usr/local/share/sgml/jade/catalog -c /usr/local/share/sgml/catalog.ports -t sgml /w/www/build/doc/en_US.ISO8859-1/books/porters-handbook/book.sgml
/usr/local/bin/jade:/w/www/build/doc/en_US.ISO8859-1/books/porters-handbook/book.sgml:13154:9:E: general entity "man.VOP" not defined and no default entity
*** Error code 1

Stop in /w/www/build/doc/en_US.ISO8859-1/books/porters-handbook.
*** Error code 1

Stop in /w/www/build/doc/en_US.ISO8859-1/books.
*** Error code 1

Stop in /w/www/build/doc/en_US.ISO8859-1.
*** Error code 1

Stop in /w/www/build/www/en/doc.
*** Error code 1

Stop in /w/www/build/www/en.
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