Theme broken for PHP v8

Created by: trevorjwood

I've just tried this theme on a website that needs to move to PHP8 and it is broken.

PHP error message is

[07-Mar-2022 10:42:51 UTC] PHP Fatal error: Uncaught ValueError: Missing format specifier at end of string in *****\wp-content\themes\ice-cold\template-parts\page\content-front-page.php:53 Stack trace: #0 *****\wp-content\themes\ice-cold\template-parts\page\content-front-page.php(53): sprintf('Continue readin...', '<i class="fas f...') #1 *****\wp-includes\template.php(772): require('C:\websites\lei...') #2 (closed) *****\wp-includes\template.php(716): load_template('C:\websites\lei...', false, Array) #3 *****\wp-includes\general-template.php(204): locate_template(Array, true, false, Array) #4 *****\wp-content\themes\ice-cold\front-page.php(41): get_template_part('template-parts/...', 'front-page') #5 *****\wp-includes\template-loader.php(106): include('C:\websites\lei...') #6 *****\wp-blog-header.php(19): require_once('C:\websites\lei...') #7 *****\index.php(17): require('C:\websites\lei...') #8 {main} thrown in *****\wp-content\themes\ice-cold\template-parts\page\content-front-page.php on line 53