Fatal Error – Uncaught TypeError: Unsupported operand types

HI Elementor,

I have a bilingual site.

I built it using Elementor Pro plugin and then after a year I couldn’t renew the licence.

My site recently updated to PHP8.1 and when the server is updated it throws the below fatal error and the French home page of the site is broken. Even If I try to change the home page to a brand new page the French home page is always broken. I use polylang for elementor and here is the error below.

[Sat Mar 11 11:18:23.912654 2023] [fcgid:warn] [pid 62722:tid
120193944246016] [client?201.185.245.151:49850] mod_fcgid: stderr: PHP
Fatal error:? Uncaught TypeError: Unsupported operand types: string / int
in
/home/dh_ez99pc/albertarkilanian.com/wp-content/plugins/elementor/includes/libraries/bfi-thumb/bfi-thumb.php:748,
referer:?https://uebernet.dreamhost.com/

How do I fix it?