I get the following error on PHP 8, 8.1 and 8.2. With PHP 7.4 everything is fine. The snippets list does not load anymore, I get a blank page.

AH01071: Got error 'PHP message: PHP Fatal error: Uncaught TypeError: Unsupported operand types: string - string in /var/www//var/www/wordpress/wp-content/pluginscode-snippets-pro/php/class-list-table.php:1092\nStack trace:\n#0 /var/www//var/www/wordpress/wp-content/pluginscode-snippets-pro/php/class-list-table.php(1150): Code_Snippets\\List_Table->get_sort_direction()\n#1 [internal function]: Code_Snippets\\List_Table->usort_reorder_callback()\n#2 /var/www//var/www/wordpress/wp-content/pluginscode-snippets-pro/php/class-list-table.php(1055): usort()\n#3 /var/www//var/www/wordpress/wp-content/pluginscode-snippets-pro/php/admin-menus/class-manage-menu.php(118): Code_Snippets\\List_Table->prepare_items()\n#4 /var/www/wordpress/wp-includes/class-wp-hook.php(308): Code_Snippets\\Manage_Menu->load()\n#5 /var/www/wordpress/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()\n#6 /var/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action()\n#7...', referer: https:/myblog.dev/wp-admin/admin.php?page=import-code-snippets&imported=50