Memberships Error

Hello Greg

I am installing Memberships version 1.1 and I get this error:

18-Nov-2020 06:43:56 UTC] PHP Fatal error:  Uncaught ArgumentCountError: Too few arguments to function WPAdverts\Memberships\Integration\Authors::add_memberships_menu_link(), 1 passed in /wp-includes/class-wp-hook.php on line 287 and exactly 2 expected in /wp-content/plugins/wpadverts-memberships/includes/class-integration-authors.php:12
Stack trace:
#0 /wp-includes/class-wp-hook.php(287): WPAdverts\Memberships\Integration\Authors->add_memberships_menu_link(Array)
#1 /wp-includes/plugin.php(206): WP_Hook->apply_filters(Array, Array)
#2 /wp-content/plugins/wpadverts-authors/includes/class-widget-panel-manage.php(248): apply_filters('adverts_authors...', Array)
#3 /wp-includes/class-wp-widget.php(380): Adverts_Authors_Dashboard_Menu->widget(Array, Array)
#4 /wp-includes/widgets.php(805): WP_Widget->display_callback(Array, Array)
#5 /wp-conten in /wp-content/plugins/wpadverts-memberships/includes/class-integration-authors.php on line 12
[18-Nov-2020 06:45:13 UTC] PHP Fatal error:  Uncaught ArgumentCountError: Too few arguments to function WPAdverts\Memberships\Integration\Authors::add_memberships_menu_link(), 1 passed in /wp-includes/class-wp-hook.php on line 287 and exactly 2 expected in /wp-content/plugins/wpadverts-memberships/includes/class-integration-authors.php:12

What could be the problem?

Thanks in advance