Fatal error: Uncaught Error: Call to undefined method WP_Error::link_header() in /var/www/hallqvist.dk/public_html/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php:673 Stack trace: #0 /var/www/hallqvist.dk/public_html/wp-includes/rest-api/class-wp-rest-server.php(1293): WP_REST_Posts_Controller->get_item(Object(WP_REST_Request)) #1 /var/www/hallqvist.dk/public_html/wp-includes/rest-api/class-wp-rest-server.php(1126): WP_REST_Server->respond_to_request(Object(WP_REST_Request), '/wp/v2/pages/(?...', Array, NULL) #2 /var/www/hallqvist.dk/public_html/wp-includes/rest-api/class-wp-rest-server.php(441): WP_REST_Server->dispatch(Object(WP_REST_Request)) #3 /var/www/hallqvist.dk/public_html/wp-includes/rest-api.php(480): WP_REST_Server->serve_request('/wp/v2/pages/2') #4 /var/www/hallqvist.dk/public_html/wp-includes/class-wp-hook.php(341): rest_api_loaded(Object(WP)) #5 /var/www/hallqvist.dk/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters('', Array) #6 /var/www/hallqvist.dk/public_html/wp-includes/plugin.php(570): WP_Hook->do_action(Array) #7 /var/www/hallqvist.dk/public_html/wp-includes/class-wp.php(418): do_action_ref_array('parse_request', Array) #8 /var/www/hallqvist.dk/public_html/wp-includes/class-wp.php(821): WP->parse_request('') #9 /var/www/hallqvist.dk/public_html/wp-includes/functions.php(1343): WP->main('') #10 /var/www/hallqvist.dk/public_html/wp-blog-header.php(16): wp() #11 /var/www/hallqvist.dk/public_html/index.php(17): require('/var/www/hallqv...') #12 {main} thrown in /var/www/hallqvist.dk/public_html/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php on line 673