Install CodeIgniter 4 on Shared Hosting

I just don't get this, my server shared hosting with linux, cpanel and public_html

All I have to do is rename public to public_html upload all my files to the root using Filezilla FTP

And all done can log right on to my site.

i try to install on altervista (free hosting without cpanel , without public_html [\ is the public_html]) , i want install ci4 on subfolder(in several of my project ci work in a subfolder where in the root are wp or joomla) . i copy all file in the subfolder :


http://ci4.altervista.org/codeigniter4auth/public/

this is the error :

ErrorException

realpath(): open_basedir restriction in effect. File(/var/www/html) is not within the allowed path(s): (/membri/ci4/:/membri2/ci4/:/membri/.dummy/)