I found a solution for users that use Windows to translate Gibbon into another “installed” language. You can watch my short solution video: https://youtu.be/_pBnPa9basg
Summary:
Make sure your Gibbon installation has a 100% passed system check (you will need to installed certain PHP extensions)
Install the Languages you want
Create a System Variable in Windows called LANG
Change the variable to the language code you prefer (requires adding the language to the Gibbon installation). For example: LANG=es_MX to use Gibbon in English
Restart Apache server
Refresh browser
Start using Gibbon in the language you prefer.
Have a great day!
Manuel Ruiz
Change the variable to the language code you prefer (requires adding the language to the Gibbon installation). For example: LANG=es_MX to use Gibbon in English Spanish