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

[User Www-data]

/usr/local/www/build/head/en_US.ISO8859-1/articles/hubs/article.xml:279: parser error : Opening and ending tag mismatch: itemizedlist line 224 and sect2
   </sect2>
           ^
/usr/local/www/build/head/en_US.ISO8859-1/articles/hubs/article.xml:280: parser error : Opening and ending tag mismatch: sect3 line 215 and sect1
  </sect1>
          ^
/usr/local/www/build/head/en_US.ISO8859-1/articles/hubs/article.xml:709: parser error : Opening and ending tag mismatch: sect2 line 135 and article
</article>
          ^
/usr/local/www/build/head/en_US.ISO8859-1/articles/hubs/article.xml:710: parser error : Premature end of data in tag sect1 line 49

^
/usr/local/www/build/head/en_US.ISO8859-1/articles/hubs/article.xml:710: parser error : Premature end of data in tag article line 4

^
*** [article.parsed.xml] Error code 1

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

make[4]: stopped in /usr/local/www/build/head/en_US.ISO8859-1/articles/hubs
*** [all] 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] 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
        3.93 real         1.85 user         2.34 sys

latestrevision.timestamp "2018-06-10 20:57:09" 
latestrevision.committer "sevan"		
latestrevision.number "51817"