Fatal error caused by this plugin

I’m seeing a fatal error on my site against this plugin…

PHP Fatal error: Uncaught Error: Call to undefined function create_function() in /srv/htdocs/wp-content/plugins/cookies-for-comments/cookies-for-comments.php:112 Stack trace: #0 /wordpress/core/6.1.1/wp-includes/class-wp-hook.php(308): cfc_check_comment_style_cookie(Array) #1 /wordpress/core/6.1.1/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array) #2 /wordpress/core/6.1.1/wp-includes/comment.php(2241): apply_filters('preprocess_comm...', Array) #3 /wordpress/core/6.1.1/wp-includes/comment.php(3642): wp_new_comment(Array, true) #4 /wordpress/core/6.1.1/wp-comments-post.php(25): wp_handle_comment_submission(Array) #5 {main} thrown in /srv/htdocs/wp-content/plugins/cookies-for-comments/cookies-for-comments.php on line 112

I’m using PHP 8.1, so not sure if that’s part of the issue here.