Edit file File name : pkg_ko-KR.xml Content :<?xml version="1.0" encoding="UTF-8" ?> <extension type="package" version="3.8" method="upgrade"> <name>Korean (ko-KR) Language Pack</name> <packagename>ko-KR</packagename> <version>3.8.9.1</version> <creationDate>2018-07-21</creationDate> <author>Korean translation team</author> <authorEmail>ko-kr_joomla@kilmeny.net</authorEmail> <url>http://joomla.ecfirm.net/</url> <packager>Korean translation team</packager> <packagerurl>http://joomla.ecfirm.net/</packagerurl> <description>3.8.9 Joomla Korean Language Package</description> <files> <file type="language" client="administrator" id="ko-KR">admin_ko-KR.zip</file> <file type="language" client="site" id="ko-KR">site_ko-KR.zip</file> </files> <updateservers> <server type="collection" priority="1" name="Accredited Joomla! Translations">https://update.joomla.org/language/translationlist_3.xml</server> </updateservers> </extension> Save