Fatal Error

I had high hopes for this plugin but encounter the following errors on the page where the shortcode is used:

Fatal error: Uncaught ArgumentCountError: Too few arguments to function nmMemberConvo::getUsersByRole(), 0 passed in /home/******.com/wp-content/plugins/wordpress-member-private-conversation/templates/modal/user-modal.php on line 6 and exactly 1 expected in /home******.com/wp-content/plugins/wordpress-member-private-conversation/classes/class.convo.php:339 Stack trace: #0 /home/******.com/wp-content/plugins/wordpress-member-private-conversation/templates/modal/user-modal.php(6): nmMemberConvo->getUsersByRole() #1 /home/******.com/wp-content/plugins/wordpress-member-private-conversation/inc/helpers.php(23): include_once(‘/home/******/…’) #2 /home/******.com/wp-content/plugins/wordpress-member-private-conversation/classes/class.convo.php(154): nmconvo_load_templates(‘modal/user-moda…’) #3 /home/******.com/wp-includes/class-wp-hook.php(286): nmMemberConvo->{closure}(”) #4 /home/******.com/wp-i in /home/*****.com/wp-content/plugins/wordpress-member-private-conversation/classes/class.convo.php on line 339

Warning: Division by zero in /home/******.com/wp-content/plugins/wordpress-member-private-conversation/templates/_template_convo.php on line 13