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Fatal error: Uncaught Error: Call to a member function filter_post_class() on null in /var/www/sorring.dk/public_html/wp-content/themes/wonderflux/functions.php:869 Stack trace: #0 /var/www/sorring.dk/public_html/wp-includes/class-wp-hook.php(326): wfx_filter_post_class(Object(WP_Post)) #1 /var/www/sorring.dk/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array) #2 /var/www/sorring.dk/public_html/wp-includes/plugin.php(565): WP_Hook->do_action(Array) #3 /var/www/sorring.dk/public_html/wp-includes/class-wp-query.php(4727): do_action_ref_array('the_post', Array) #4 /var/www/sorring.dk/public_html/wp-includes/query.php(1233): WP_Query->setup_postdata(Object(WP_Post)) #5 /var/www/sorring.dk/public_html/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php(1757): setup_postdata(Object(WP_Post)) #6 /var/www/sorring.dk/public_html/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php(569): WP_REST_Posts_Controller->prepare_item_for_response(Object(WP_Post), Object(WP_REST_Reque in /var/www/sorring.dk/public_html/wp-content/themes/wonderflux/functions.php on line 869