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

[User Www-data]

Entity: line 1: parser error : Entity 'a.johalun' not defined
&a.johalun; <email xmlns='http://docbook.org/ns/docbook'>johalun at FreeBSD.org</em
           ^
/usr/local/www/build/head/en_US.ISO8859-1/articles/contributors/contrib.develalumni.xml:1051: parser error : Entity 'a.johan.email' failed to parse
    <para>&a.johan.email; (2002 - 2007)</para>
                         ^
/usr/local/www/build/head/en_US.ISO8859-1/articles/contributors/contrib.develalumni.xml:1750: parser error : chunk is not well balanced

^
/usr/local/www/build/head/en_US.ISO8859-1/articles/contributors/article.xml:394: parser error : Failure to process entity contrib.develalumni
    &contrib.develalumni;
                         ^
/usr/local/www/build/head/en_US.ISO8859-1/articles/contributors/article.xml:394: parser error : Entity 'contrib.develalumni' not defined
    &contrib.develalumni;
                         ^
*** [article.parsed.xml] Error code 1

make[4]: stopped in /usr/local/www/build/head/en_US.ISO8859-1/articles/contributors
1 error

make[4]: stopped in /usr/local/www/build/head/en_US.ISO8859-1/articles/contributors
*** [all_subdir_doc/articles/contributors] Error code 2

make[3]: stopped in /usr/local/www/build/head/en_US.ISO8859-1/articles
1 error

make[3]: stopped in /usr/local/www/build/head/en_US.ISO8859-1/articles
*** [all_subdir_doc/articles] Error code 2

make[2]: stopped in /usr/local/www/build/head/en_US.ISO8859-1
1 error

make[2]: stopped in /usr/local/www/build/head/en_US.ISO8859-1
*** [all-all] Error code 2

make[1]: stopped in /usr/local/www/build/head/en_US.ISO8859-1/htdocs/doc
1 error

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

make: stopped in /usr/local/www/build/head/en_US.ISO8859-1/htdocs
1 error

make: stopped in /usr/local/www/build/head/en_US.ISO8859-1/htdocs
       34.41 real         7.92 user         3.80 sys

latestrevision.timestamp "2019-01-31 18:02:36" 
latestrevision.committer "imp"		
latestrevision.number "52791"