Fatal error: Uncaught Error: Class 'WP_Widget_Calendar' not found in /home/customer/www/gemini-print.co.uk/public_html/wp-includes/class-wp-widget-factory.php:61 Stack trace: #0 /home/customer/www/gemini-print.co.uk/public_html/wp-includes/widgets.php(115): WP_Widget_Factory->register('WP_Widget_Calen...') #1 /home/customer/www/gemini-print.co.uk/public_html/wp-includes/widgets.php(1766): register_widget('WP_Widget_Calen...') #2 /home/customer/www/gemini-print.co.uk/public_html/wp-includes/class-wp-hook.php(303): wp_widgets_init('') #3 /home/customer/www/gemini-print.co.uk/public_html/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #4 /home/customer/www/gemini-print.co.uk/public_html/wp-includes/plugin.php(470): WP_Hook->do_action(Array) #5 /home/customer/www/gemini-print.co.uk/public_html/wp-settings.php(578): do_action('init') #6 /home/customer/www/gemini-print.co.uk/public_html/wp-config.php(78): require_once('/home/customer/...') #7 /home/customer/www/gemini-print.co.uk/public_html/wp-load.php( in /home/customer/www/gemini-print.co.uk/public_html/wp-includes/class-wp-widget-factory.php on line 61