# Application installation fails on systems with Turkish locale (tr\_TR.UTF-8) – variables not initialized (INSTALL\_DIR, ADMIN)
**URL:** https://forum.yunohost.org/t/application-installation-fails-on-systems-with-turkish-locale-tr-tr-utf-8-variables-not-initialized-install-dir-admin/42023
**Category:** Support apps
**Tags:** roundcube, english
**Created:** [April 9, 2026, 9:52am UTC](https://forum.yunohost.org/t/application-installation-fails-on-systems-with-turkish-locale-tr-tr-utf-8-variables-not-initialized-install-dir-admin/42023 "2026-04-09T09:52:52Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@fatih\_kl](https://forum.yunohost.org/u/fatih_kl)
#### Post date: [April 9, 2026, 9:52am UTC](https://forum.yunohost.org/t/application-installation-fails-on-systems-with-turkish-locale-tr-tr-utf-8-variables-not-initialized-install-dir-admin/42023/1 "2026-04-09T09:52:52Z")
**What app is this about, and its version** : all
**What YunoHost version are you running** : 12.1.39
**What type of hardware are you using** : Old laptop or computer
### Describe your issue
When installing applications on YunoHost systems configured with a Turkish locale (tr\_TR.UTF-8), application installations consistently fail during configuration file templating.
This issue affects multiple applications (e.g. Roundcube, SOGo, others) and is not app‑specific.
When the system locale is set to tr\_TR.UTF-8, YunoHost helper scripts fail to correctly initialize variables used in configuration templates (such as **INSTALL\_DIR** , **ADMIN** ).
As a result, application installation aborts even when all configuration options are left at their defaults.
Changing the system locale to en\_US.UTF-8 resolves the issue immediately, and all applications install successfully without any other changes.
Environment:
YunoHost version: 12.1.x
Debian: Bookworm
Affected locale:
LANG=tr\_TR.UTF-8
### Share relevant logs or error messages
During application installation, the following errors are reported:
Variable $install\_dir wasn’t initialized when trying to replace **INSTALL\_DIR**
In the logs, the variable name appears incorrectly due to locale-specific character handling:
Variable $ınstall\_dır wasn’t initialized
Example error output:
ERROR - roundcube indirilmedi:
Uygulama indirme script’inde (betikde) bir hata oluştu :
Variable $ınstall\_dır wasn’t initialized when trying to replace **INSTALL\_DIR**
in /etc/nginx/conf.d/.d/roundcube.conf
After changing the system locale using:
Shellsudo locale-gen en\_US.UTF-8sudo localectl set-locale LANG=en\_US.UTF-8sudo rebootDaha fazla satır göster
the errors no longer occur and all applications install correctly.
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### Author:  [@system](https://forum.yunohost.org/u/system)
#### Post date: [April 24, 2026, 9:53am UTC](https://forum.yunohost.org/t/application-installation-fails-on-systems-with-turkish-locale-tr-tr-utf-8-variables-not-initialized-install-dir-admin/42023/2 "2026-04-24T09:53:14Z")
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