PHP 8

Hej,
is it possible to adapt the Aqua-theme so that it works under php8?

I get the following error when calling the admin area:

/wordpress/wp-content/themes/Aqua/option-tree/ot-loader.php on line 98

Notice: Only variables should be passed by reference in /wordpress/wp-content/themes/Aqua/option-tree/ot-loader.php on line 326

Fatal error: Uncaught ArgumentCountError: Too few arguments to function WP_Widget::__construct(), 0 passed in /wordpress/wp-includes/class-wp-widget-factory.php on line 62 and at least 2 expected in /wordpress/wp-includes/class-wp-widget.php:163 Stack trace: #0 /wordpress/wp-includes/class-wp-widget-factory.php(62): WP_Widget->__construct() #1 /wordpress/wp-includes/widgets.php(115): WP_Widget_Factory->register() #2 /wordpress/wp-content/themes/Aqua/includes/boc_widgets.php(5): register_widget() #3 /wordpress/wp-includes/class-wp-hook.php(308): boc_load_widgets() #4 /wordpress/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #5 /wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() #6 /wordpress/wp-includes/widgets.php(1854): do_action() #7 /wordpress/wp-includes/class-wp-hook.php(308): wp_widgets_init() #8 /wordpress/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #9 /wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() #10 /wordpress/wp-settings.php(623): do_action() #11 /wordpress/wp-config.php(89): require_once(‘…’) #12 /wordpress/wp-load.php(50): require_once(‘…’) #13 /wordpress/wp-admin/admin.php(34): require_once(‘…’) #14 /wordpress/wp-admin/index.php(10): require_once(‘…’) #15 {main} thrown in /wordpress/wp-includes/class-wp-widget.php on line 163xxx_xxx