just installed highend in a new website and got a big error

Hi, I just installed a highend.zip file I have from years ago, and it seems it has an error because now I cannot do anything at all on the site. Could you give me a hand?

This is what is says:

Fatal error: Uncaught ArgumentCountError: Too few arguments to function WP_Widget::__construct(), 0 passed in /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/class-wp-widget-factory.php on line 62 and at least 2 expected in /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/class-wp-widget.php:163 Stack trace: #0 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/class-wp-widget-factory.php(62): WP_Widget->__construct() #1 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/widgets.php(115): WP_Widget_Factory->register(‘HB_Most_Comment…’) #2 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-content/themes/HighendWP/includes/widgets/widget-most-commented-posts.php(20): register_widget(‘HB_Most_Comment…’) #3 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/class-wp-hook.php(308): hb_most_commented_posts_widget(”) #4 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(”, Array) #5 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/widgets.php(1854): do_action(‘widgets_init’) #7 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/class-wp-hook.php(308): wp_widgets_init(”) #8 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #9 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #10 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-settings.php(617): do_action(‘init’) #11 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-config.php(103): require_once(‘/homepages/18/d…’) #12 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-load.php(50): require_once(‘/homepages/18/d…’) #13 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-admin/admin.php(34): require_once(‘/homepages/18/d…’) #14 /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-admin/themes.php(10): require_once(‘/homepages/18/d…’) #15 {main} thrown in /homepages/18/d450231912/htdocs/clickandbuilds/shamanu/wp-includes/class-wp-widget.php on line 163

Could it be a file that doesn’t work anymore? Could you give me a newer version or get inside my site and repair it? I would really appreciate it any of those options.

Regards,
Manu