I was having the same problem when upgrading. The DateTime::TimeZone module appeared to be installed but the Bugzilla I found this by writing a two line perl script to simulate the check done by Bugzilla:<\/p>\n and then running it to see the errors:<\/p>\n After installing the above modules the <\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/p>\n","protected":false},"excerpt":{"rendered":" Perl DateTime::TimeZone \uac00 \uc8fd\uc5b4\ub3c4 \uc124\uce58 \uc548\ub420\ub54c \ud574\uacb0 \ubc29\ubc95 9down vote I was having the same problem when upgrading. The DateTime::TimeZone module appeared to be installed but the Bugzilla checksetup.pl script always reported that it was not found. The following fixed the problem for me (run from the Bugzilla install dir): $ perl install-module.pl Params::Util $ perl install-module.pl Module::Runtime I found this by writing a two line perl script to simulate the check done by Bugzilla: use lib qw(. lib); use DateTime::TimeZone; and then running it to see the errors: perl \/tmp\/foo.pl After installing the above modules the foo.pl script passes and so does Bugzilla checksetup.pl <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"ngg_post_thumbnail":0,"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[5],"tags":[],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5q9Zn-co","jetpack-related-posts":[{"id":824,"url":"https:\/\/blog.box.kr\/?p=824","url_meta":{"origin":768,"position":0},"title":"[scrap]Step-by-Step Bugzilla Installation Guide for Linux","date":"2015-05-20","format":false,"excerpt":"http:\/\/www.thegeekstuff.com\/2010\/05\/install-bugzilla-on-linux\/ \u00a0 \u00a0 Bugzilla is the best open source bug tracking system. Very simple to use with lot of features. Bugzilla allows you to track the bugs and collaborate with developers and other teams in your organization effectively. This is a detailed step-by-step bugzilla installation guide for Linux. 1. Verify\u2026","rel":"","context":"In "\uae30\uc220"","img":{"alt_text":"","src":"https:\/\/i0.wp.com\/static.thegeekstuff.com\/wp-content\/uploads\/2008\/10\/bugzilla-logo-260x300.png?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":766,"url":"https:\/\/blog.box.kr\/?p=766","url_meta":{"origin":768,"position":1},"title":"install bugzilla with nginx on centos7","date":"2015-05-11","format":false,"excerpt":"Set the Hostname Before you begin installing and configuring the components described in this guide, please make sure you\u2019ve followed our instructions for setting your hostname. Issue the following commands to make sure it is set properly: hostname hostname -f The first command should show your short hostname, and the\u2026","rel":"","context":"In "Linux"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":770,"url":"https:\/\/blog.box.kr\/?p=770","url_meta":{"origin":768,"position":2},"title":"Bugzilla \uc124\uce58\uc2dc compiler error ( Lib, Module \uc5c6\ub2e4\ub294.. \uc624\ub958 )","date":"2015-05-11","format":false,"excerpt":"-lz \uc624\ub958\ub294 yum\u00a0-y install \u00a0zlib-devel -lssl \uc624\ub958\ub294 yum -y install openssl-devel \u00a0 -lcrypto \uc624\ub958\ub294 yum install -y openssl-devel \u00a0","rel":"","context":"In "\uae30\uc220\uc790\ub8cc"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":826,"url":"https:\/\/blog.box.kr\/?p=826","url_meta":{"origin":768,"position":3},"title":"[scrap]50 UNIX \/ Linux Sysadmin Tutorials","date":"2015-05-20","format":false,"excerpt":"http:\/\/www.thegeekstuff.com\/2010\/12\/50-unix-linux-sysadmin-tutorials\/ \u00a0 Merry Christmas and Happy Holidays to all TGS Readers. To wrap this year, I\u2019ve collected 50 UNIX \/ Linux sysadmin related tutorials that we\u2019ve posted so far. This is lot of reading. Bookmark this article for your future reference and read it whenever you get free time. Disk\u2026","rel":"","context":"In "\uae30\uc220"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":953,"url":"https:\/\/blog.box.kr\/?p=953","url_meta":{"origin":768,"position":4},"title":"How to install openssl on windows with visual studio 2015","date":"2015-08-26","format":false,"excerpt":"cite from\u00a0http:\/\/developer.covenanteyes.com\/building-openssl-for-visual-studio\/ and some edit.. ================================================== \u00a0 You need to install\u2026 Visual Studio 2015 (this will likely work with older versions as well) ActivePerl 1 Latest version of OpenSSL source-code 2\u00a0or $ git clone git:\/\/git.openssl.org\/openssl.git $ cd openssl $ git config core.autocrlf false $ git config core.eol lf $ git\u2026","rel":"","context":"In "\uae30\uc220"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":558,"url":"https:\/\/blog.box.kr\/?p=558","url_meta":{"origin":768,"position":5},"title":"OSX\uc5d0\uc11c GIT \uc11c\ubc84 \uc124\uc815 \ud558\uae30","date":"2015-01-25","format":false,"excerpt":"* Shell \uc5d0\uc11c \uc0ac\uc6a9\uc790 \ucd94\uac00 !! 1. \"sudo dscl . -create \/Users\/username UserShell \u00a0\/bin\/bash\" 2. \"sudo dscl . -create\u00a0\/Users\/username\u00a0RealName \"John Doth\"\" 3. \"sudo dscl . -create\u00a0\/Users\/username\u00a0UniquelID 1001\" 4.\u00a0\"sudo dscl . -create\u00a0\/Users\/username\u00a0PrimaryGroupID\u00a01000\" 5.\u00a0\"sudo dscl . -create\u00a0\/Users\/username\u00a0NFSHomeDirectory \/Local\/Users\/username\" 6.\u00a0\"sudo dscl . -create\u00a0\/Users\/username\u00a0password\" \u00a0 \u00a0<<= \uc554\ud638 \uc785\ub825 * GIT\uc124\uce58 1. \uc0ac\uc6a9\uc790 \"git-admin\" \u00a0\ucd94\uac00\u2026","rel":"","context":"In "\uc77c\uc0c1"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/blog.box.kr\/index.php?rest_route=\/wp\/v2\/posts\/768"}],"collection":[{"href":"https:\/\/blog.box.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.box.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.box.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.box.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=768"}],"version-history":[{"count":0,"href":"https:\/\/blog.box.kr\/index.php?rest_route=\/wp\/v2\/posts\/768\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.box.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=768"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.box.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=768"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.box.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}checksetup.pl<\/code> script always reported that it was not found. The following fixed the problem for me (run from the Bugzilla install dir):<\/p>\n$ perl install<\/span>-<\/span>module<\/span>.<\/span>pl <\/span>Params<\/span>::<\/span>Util<\/span>\n$ perl install<\/span>-<\/span>module<\/span>.<\/span>pl <\/span>Module<\/span>::<\/span>Runtime<\/span><\/code><\/pre>\nuse<\/span> lib qw<\/span>(.<\/span> lib<\/span>);<\/span>\nuse<\/span> DateTime<\/span>::<\/span>TimeZone<\/span>;<\/span><\/code><\/pre>\nperl <\/span>\/<\/span>tmp<\/span>\/<\/span>foo<\/span>.<\/span>pl<\/span><\/code><\/pre>\nfoo.pl<\/code> script passes and so does Bugzilla checksetup.pl<\/code><\/p>\n