Fatal error: Uncaught Error: Call to undefined function WP_STATISTICS\add_action() in /usr/home/FixAGD/domains/dabrowagornicza.org.pl/public_html/wp-content/plugins/wp-statistics/includes/admin/pages/class-wp-statistics-admin-page-settings.php:12
Stack trace:
#0 /usr/home/FixAGD/domains/dabrowagornicza.org.pl/public_html/wp-content/plugins/wp-statistics/includes/admin/pages/class-wp-statistics-admin-page-settings.php(544): WP_STATISTICS\settings_page->__construct()
#1 {main}
  thrown in /usr/home/FixAGD/domains/dabrowagornicza.org.pl/public_html/wp-content/plugins/wp-statistics/includes/admin/pages/class-wp-statistics-admin-page-settings.php on line 12