Install Script on Shared Hosting

I need FireFly III (accounting software) installed on a domain with Linux Cpanel. I tried installing it myself with Softalicious but I'm getting errors. Below are the links so you can familiarize yourself with what it entails...

https://www.softaculous.com/softaculous/apps/others/Firefly_III

https://docs.firefly-iii.org/firefly-iii/installation/self_hosted/