also this came in an email too:
Error Details
=============
An error of type E_ERROR was caused in line 700 of the file /var/www/wp-content/plugins/post-views-counter/includes/class-settings.php. Error message: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in /var/www/wp-content/plugins/post-views-counter/includes/class-settings.php:700
Stack trace:
#0 /var/www/wp-content/plugins/post-views-counter/includes/class-settings.php(700): in_array('administrator', NULL, true)
#1 /var/www/wp-content/plugins/post-views-counter/includes/class-settings-api.php(451): Post_Views_Counter_Settings->setting_exclude(Array)
#2 /var/www/wp-admin/includes/template.php(1826): Post_Views_Counter_Settings_API->render_field(Array)
#3 /var/www/wp-admin/includes/template.php(1780): do_settings_fields('post_views_coun...', 'post_views_coun...')
#4 /var/www/wp-content/plugins/post-views-counter/includes/class-settings-api.php(259): do_settings_sections('post_views_coun...')
#5 /var/www/wp-includes/class-wp-hook.php(308): Post_Views_Counter_Settings_API->options_page('')
#6 /var/www/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array)
#7 /var/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#8 /var/www/wp-admin/admin.php(259): do_action('settings_page_p...')
#9 /var/www/wp-admin/options-general.php(10): require_once('/var/www/wp-adm...')
#10 {main}
thrown