Fatal error: Uncaught Error: Class "WP_STATISTICS\RestAPI" not found in /usr/local/www/irenakulesza.pl/wp-content/plugins/wp-statistics/includes/api/v2/class-wp-statistics-api-meta-box.php:7 Stack trace: #0 {main} thrown in /usr/local/www/irenakulesza.pl/wp-content/plugins/wp-statistics/includes/api/v2/class-wp-statistics-api-meta-box.php on line 7