[DRE-maint] Bug#1123940: redmine: Image don't appear in exported PDF

[Nawan]

Package: redmine
Version: 6.0.5+ds-1
Severity: normal

Dear Debian Ruby Team Maintainer,

When I try to export an issue containing an image attachment as a PDF, the image doesn't appear in the exported PDF. Installing Ghostscript alongside ImageMagick, as stated in the upstream documentation, only resolve "ImageMagick PDF support available (optional)" warning in Redmine's Information page but the issue still persist. After inspecting the log, I found this error:

```
[2025-12-24T18:08:42.382745 #89263]  INFO -- : [132b26a5-5318-4ac3-81ca-7ee4fa9195aa] Started GET "/issues/189.pdf" for 182.2.78.137 at 2025-12-24 18:08:42 +0700
[2025-12-24T18:08:42.391512 #89263]  INFO -- : [132b26a5-5318-4ac3-81ca-7ee4fa9195aa] Processing by IssuesController#show as PDF
[2025-12-24T18:08:42.391857 #89263]  INFO -- : [132b26a5-5318-4ac3-81ca-7ee4fa9195aa]   Parameters: {"id"=>"189"}
[2025-12-24T18:08:42.429377 #89263]  INFO -- : [132b26a5-5318-4ac3-81ca-7ee4fa9195aa]   Current user: nawan (id=1)
[2025-12-24T18:08:42.699737 #89263] ERROR -- : [132b26a5-5318-4ac3-81ca-7ee4fa9195aa] pdf: Image: error: No such file or directory @ rb_sysopen - /usr/share/redmine/tmp/20251224-89263-re9dhj_251224173820_clipboard-202512241738-ubr7k.png.png
```

Regards,
Nawan

-- System Information:
Debian Release: 13.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.57+deb13-amd64 (SMP w/1 CPU thread; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_IN:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages redmine depends on:
ii  dbconfig-common                 2.0.25
ii  debconf [debconf-2.0]           1.5.91
ii  libjs-chart.js                  3.9.1+~cs3.1.2-3
ii  libjs-jquery                    3.6.1+dfsg+~3.5.14-1
ii  libjs-jquery-ui                 1.13.2+dfsg-1
ii  libjs-raphael                   2.3.0-4
ii  puma                            6.6.0-4
ii  redmine-mysql                   6.0.5+ds-1
ii  redmine-sqlite                  6.0.5+ds-1
ii  ruby                            1:3.3+b1
ii  ruby-actionpack-action-caching  1.2.2-4
ii  ruby-actionpack-xml-parser      2.0.1-5
ii  ruby-addressable                2.8.7-2
ii  ruby-bundler                    2.6.7-2
ii  ruby-capybara                   3.40.0+ds-2
ii  ruby-coderay                    1.1.3-8
ii  ruby-commonmarker               0.23.10-1+b3
ii  ruby-csv                        3.3.4-1
ii  ruby-html-pipeline              2.14.3-2
ii  ruby-i18n                       1.14.7-1
ii  ruby-jquery-rails               4.3.5-5
ii  ruby-listen                     3.9.0-1
ii  ruby-mail                       2.8.1+dfsg1-2
ii  ruby-marcel                     1.0.4+dfsg-2
ii  ruby-mini-magick                5.2.0-1
ii  ruby-mini-mime                  1.1.5-1
ii  ruby-mocha                      2.4.2-2
ii  ruby-net-ldap                   0.19.0-1
ii  ruby-nokogiri                   1.18.2+dfsg-1+b1
ii  ruby-rack                       3.1.18-1~deb13u1
ii  ruby-rails                      2:7.2.2.2+dfsg-2~deb13u1
ii  ruby-rails-dom-testing          2.2.0-1
ii  ruby-rails-observers            0.1.5-1.1
ii  ruby-rails-propshaft            1.1.0-3
ii  ruby-rbpdf                      1.21.3+dfsg-1
ii  ruby-redcarpet                  3.6.0-1+b5
ii  ruby-rmagick                    6.0.1-3
ii  ruby-roadie                     5.2.1-2
ii  ruby-roadie-rails               3.3.0-2
ii  ruby-rotp                       6.2.0-2
ii  ruby-rouge                      4.5.1-1
ii  ruby-rqrcode                    2.2.0-1
ii  ruby-sanitize                   7.0.0-1
ii  ruby-selenium-webdriver         4.4.0-1
ii  ruby-simplecov                  0.22.0-2
ii  ruby-task-list                  2.3.2-2
ii  ruby-zip                        2.3.2-1

Versions of packages redmine recommends:
ii  passenger  6.0.26+ds-1.1

Versions of packages redmine suggests:
pn  apache2                   <none>
pn  bzr                       <none>
pn  cvs                       <none>
pn  darcs                     <none>
ii  git                       1:2.47.3-0+deb13u1
pn  libapache2-mod-passenger  <none>
pn  mercurial                 <none>
pn  subversion                <none>

-- debconf information:
* redmine/current-instances: default
  redmine/instances/default/pgsql/changeconf: false
* redmine/instances/default/db/dbname: redmine_default
  redmine/instances/default/pgsql/manualconf:
* redmine/instances/default/mysql/method: Unix socket
  redmine/instances/default/missing-db-package-error: abort
  redmine/instances/default/internal/skip-preseed: false
  redmine/default-language: en
  redmine/instances/default/upgrade-error: abort
  redmine/instances/default/remote/port:
  redmine/instances/default/dbconfig-upgrade: true
* redmine/instances/default/dbconfig-install: true
  redmine/instances/default/remote/host: localhost
  redmine/instances/default/internal/reconfiguring: false
  redmine/instances/default/purge: false
* redmine/instances/default/db/app-user: redmine at localhost
  redmine/instances/default/pgsql/admin-user: postgres
* redmine/instances/default/database-type: mysql
* redmine/instances/default/default-language: en
* redmine/instances/default/mysql/admin-user: root
  redmine/instances/default/install-error: abort
  redmine/instances/default/pgsql/method: TCP/IP
* redmine/instances/default/dbconfig-reinstall: true
  redmine/instances/default/pgsql/no-empty-passwords:
  redmine/instances/default/remove-error: abort
* redmine/instances/default/mysql/authplugin: default
  redmine/instances/default/pgsql/authmethod-admin: ident
  redmine/instances/default/passwords-do-not-match:
  redmine/instances/default/db/basepath: /var/lib/dbconfig-common/sqlite3/redmine/instances/default
  redmine/instances/default/upgrade-backup: true
  redmine/instances/default/remote/newhost:
  redmine/instances/default/dbconfig-remove: true
  redmine/instances/default/pgsql/authmethod-user: password