subject:"\\\\\\\\\\\\\\\[Documentation\\\\\\\\\\\\\\\-packages\\\\\\\\\\\\\\\] \\\\\\\\\\\\\\\[Bug 1633817\\\\\\\\\\\\\\\] Re\\\\\\\\\\\\\\\: package ubuntu\\\\\\\\\\\\\\\-docs 16.04.4 failed to install\\\\\\\\\\\\\\\/upgrade\\\\\\\\\\\\\\\: failed to stat \\\\\\\\\\\\\\\(dereference\\\\\\\\\\\\\\\) existing symlink '\\\\\\\\\\\\\\\/usr\\\\\\\\\\\\\\\/share\\\\\\\\\\\\\\\/help\\\\\\\\\\\\\\\/zh_HK\\\\\\\\\\\\\\\/ubuntu\\\\\\\\\\\\\\\-help\\\\\\\\\\\\\\\/a11y\\\\\\\\\\\\\\\-bouncekeys.page'\\\\\\\\\\\\\\\: Input\\\\\\\\\\\\\\\/output error"