FreeBSD web build failed on build-web.stream.freebsd.org

[User Www-data]

===> doc/articles/problem-reports (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/vm-design (all)
===> doc/articles/wp-toolbox (all)
===> doc/books (all)
===> doc/books/arch-handbook (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)
env XML_CATALOG_FILES="file:///home/www/build/head/en_US.ISO8859-1/books/handbook/catalog-cwd.xml  file:///home/www/build/head/en_US.ISO8859-1/share/xml/catalog.xml  file:///home/www/build/head/share/xml/catalog.xml  file:///home/www/build/head/share/xml/catalog-common.xml  file:///usr/local/share/xml/catalog" /usr/local/bin/xmllint --nonet --noent --valid --dropdtd --xinclude /home/www/build/head/en_US.ISO8859-1/books/handbook/book.xml > book.parsed.xml.tmp
/home/www/build/head/en_US.ISO8859-1/books/handbook/eresources/chapter.xml:324: parser error : Entity 'a.git.name' not defined
	      <entry>&a.git.name;</entry>
	                         ^
/home/www/build/head/en_US.ISO8859-1/books/handbook/eresources/chapter.xml:1371: parser error : Entity 'a.git.name' not defined
	  <term>&a.git.name;</term>
	                    ^
/home/www/build/head/en_US.ISO8859-1/books/handbook/eresources/chapter.xml:2388: parser error : chunk is not well balanced

^
/home/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:303: parser error : Failure to process entity chap.eresources
    &chap.eresources;
                     ^
/home/www/build/head/en_US.ISO8859-1/books/handbook/book.xml:303: parser error : Entity 'chap.eresources' not defined
    &chap.eresources;
                     ^
*** [book.parsed.xml] Error code 1

Stop in /home/www/build/head/en_US.ISO8859-1/books/handbook.
*** [all] Error code 1

Stop in /home/www/build/head/en_US.ISO8859-1/books.
*** [all] Error code 1

Stop in /home/www/build/head/en_US.ISO8859-1.
*** [all-all] Error code 1

Stop in /home/www/build/head/en_US.ISO8859-1/htdocs/doc.
*** [all] Error code 1

Stop in /home/www/build/head/en_US.ISO8859-1/htdocs.
        8.28 real         4.18 user         4.00 sys