@yvesh @wilsonge you have created and edited that file and my can help out here.

OK - tell me how in the installer you can make a database connection when you haven't entered database credentials yet :)

Seriously tho it works fine for me. I think it's related to when your database credentials are the default credentials (i.e. it is root and empty password) and so the database can make a connection before it should actually be connected

@zero-24 For the time being, move this line https://github.com/joomla/joomla-cms/blob/4.0-dev/libraries/src/CMS/Application/CMSApplication.php#L144 to execute method, before this line https://github.com/joomla/joomla-cms/blob/4.0-dev/libraries/src/CMS/Application/CMSApplication.php#L321 to get it installed

@wilsonge We should fix it, please. I use XAMPP, default username is root and password is empty, I got this issue, too as reported before. Since it is default username and password of XAMPP, I think many users will get this same issue (at least when they try to install Joomla 4 on their local computer for testing)

You right @joomdonation i got the same issue trying to install Joomla 4 on my localhost

#16680