PHP Fatal Error

Plugin “Smart Logo Showcase Lite” (Version 1.1.9) causes a PHP fatal error when using PHP 8.1.

[16-Aug-2022 02:43:42 UTC] PHP Fatal error:  Uncaught TypeError: Cannot access offset of type string on string in /home/wp/disk/wordpress/wp-content/plugins/smart-logo-showcase/smart-logo-showcase.php:180
Stack trace:
#0 /home/wp/disk/wordpress/wp-includes/shortcodes.php(356): SMLS_Class->smls_generate_shortcode()
#1 [internal function]: do_shortcode_tag()
#2 /home/wp/disk/wordpress/wp-includes/shortcodes.php(228): preg_replace_callback()
#3 /home/wp/disk/wordpress/wp-includes/class-wp-hook.php(307): do_shortcode()
#4 /home/wp/disk/wordpress/wp-includes/plugin.php(191): WP_Hook->apply_filters()
#5 /home/wp/disk/wordpress/wp-includes/post-template.php(253): apply_filters()
#6 /home/wp/disk/wordpress/wp-content/themes/oshin/page.php(32): the_content()
#7 /home/wp/disk/wordpress/wp-includes/template-loader.php(106): include('...')
#8 /home/wp/disk/wordpress/wp-blog-header.php(19): require_once('...')
#9 /home/wp/disk/wordpress/index.php(17): require('...')
#10 {main}