Error after Softaculous Installer Ran

First time user.
I installed using Softaculous offered by my host
hosting is on a cheap shared hosting package
I used latest 9.0.1 and have PHP set to v8.

Install seemed to go OK but I see this msg and it is broken.

Whoops \ Exception \ ErrorException (E_WARNING)

is_dir(): open_basedir restriction in effect. File(/opt/alt/php80/var/lib/php/session) is not within the allowed path(s): (/home/oilcom/:/tmp:/var/tmp:/opt/alt/php73/usr/share/pear/:/dev/urandom:/usr/local/lib/php/:/usr/local/php73/lib/php/)

I will try at a different host

open_basedir is a setting in your cPanel PHP section, it is used to limit the files that can be opened by PHP.
You should set this to ‘none’ so that there is no restriction.