BookStack/resources/lang/ko/passwords.php

<?php
/**
 * Password Reminder Language Lines
 * The following language lines are the default lines which match reasons
 * that are given by the password broker for a password update attempt has failed.
 */
return [

    'password' => '여덟 글자를 넘어야 합니다.',
    'user' => "메일 주소를 가진 사용자가 없습니다.",
    'token' => 'The password reset token is invalid for this email address.',
    'sent' => '메일을 보냈습니다.',
    'reset' => '비밀번호를 바꿨습니다.',

];