Install OpenliteSpeed php7.4

Hi. I am struggling to make my store work for testing purposes to see if we can go on with paid versions of lite speed. Everything is installed in ubuntu 18 LTS but we cannot see magento 2 frontend or backend. We see a white blank page with no error in logs. It seems that something is wrong with php74 extensions. Same store in same server works fine with apache2 or nginx. No cpanel or any panels...Just OS

I need someone please to help me with my issue. Payment available.

Thank you in advance