We've found some issues that need to be fixed before you can proceed with the installation.
Make sure /var/www/html/music/.htaccess has been uploaded properly and is writable (0664 permission).
Make sure /var/www/html/music/public/.htaccess has been uploaded properly and is writable (0664 permission).
Make /var/www/html/music/env.example writable by giving it 0775 or 0777 permissions via file manager.
Make /var/www/html/music/public/storage writable by giving it 0775 or 0777 permissions via file manager.