Hello,
My Web Hosting doesn't have the PHP sodium extension enabled. When installing Moodle 4.1.8 through Softaculous, it's failling, but it install successfully when installing manually using Moodle installer because sodium is an optional PHP extension for Moodle as can be seen in https://docs.moodle.org/403/en/Environment_-_PHP_extension_sodium
Hi,
Thank you for notifying us.
We have modified our packages. Now you won't face any issue while installing Moodle < 4.2 branches without sodium extension.