Whilst executing xmllint on file gentoo-doc/en/handbook/handbook-mips.xml, the following error(s) were encountered.
gentoo-doc/en/handbook/handbook-mips.xml:2: warning: failed to load external entity "/dtd/book.dtd"
<!DOCTYPE book SYSTEM "/dtd/book.dtd">
^
gentoo-doc/en/handbook/handbook-mips.xml:6: validity error : Validation failed: no DTD found !
<book link="/doc/en/handbook/handbook-mips.xml">
^
Return value: 4