Fatal error: Uncaught Error: Class "WP_Widget" not found in C:\xampp\htdocs\krustpilsbaznica.lv\public_html\wp-content\plugins\catholic-liturgical-calendar\catholic-liturgy-calendar.php:27 Stack trace: #0 {main} thrown in C:\xampp\htdocs\krustpilsbaznica.lv\public_html\wp-content\plugins\catholic-liturgical-calendar\catholic-liturgy-calendar.php on line 27