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

[User Www-data]

^
/usr/local/www/build/head/share/pgpkeys/pgpkeys-developers.xml:421: parser error : Failure to process entity pgpkey.brd
      &pgpkey.brd;
                  ^
/usr/local/www/build/head/share/pgpkeys/pgpkeys-developers.xml:421: parser error : Entity 'pgpkey.brd' not defined
      &pgpkey.brd;
                  ^
/usr/local/www/build/head/share/pgpkeys/pgpkeys-developers.xml:2273: parser error : chunk is not well balanced

^
/usr/local/www/build/head/de_DE.ISO8859-1/books/handbook/pgpkeys/chapter.xml:36: parser error : Failure to process entity section.pgpkeys-developers
    &section.pgpkeys-developers;
                                ^
/usr/local/www/build/head/de_DE.ISO8859-1/books/handbook/pgpkeys/chapter.xml:36: parser error : Entity 'section.pgpkeys-developers' not defined
    &section.pgpkeys-developers;
                                ^
/usr/local/www/build/head/de_DE.ISO8859-1/books/handbook/pgpkeys/chapter.xml:39: parser error : chunk is not well balanced

^
/usr/local/www/build/head/de_DE.ISO8859-1/books/handbook/book.xml:320: parser error : Failure to process entity chap.pgpkeys
    &chap.pgpkeys;
                  ^
/usr/local/www/build/head/de_DE.ISO8859-1/books/handbook/book.xml:320: parser error : Entity 'chap.pgpkeys' not defined
    &chap.pgpkeys;
                  ^
*** Error code 1

Stop.
make[5]: stopped in /usr/local/www/build/head/de_DE.ISO8859-1/books/handbook
*** Error code 1

Stop.
make[4]: stopped in /usr/local/www/build/head/de_DE.ISO8859-1/books
*** Error code 1

Stop.
make[3]: stopped in /usr/local/www/build/head/de_DE.ISO8859-1
*** Error code 1

Stop.
make[2]: stopped in /usr/local/www/build/head/de_DE.ISO8859-1/htdocs/doc
*** Error code 1

Stop.
make[1]: stopped in /usr/local/www/build/head/de_DE.ISO8859-1/htdocs
*** Error code 1

Stop.
make: stopped in /usr/local/www/build/head/en_US.ISO8859-1/htdocs
       29.19 real        16.51 user        12.02 sys