Online pre-registration

fatal error: Uncaught Error: Call to undefined function gethostbyname() in /home/uasenst1/public_html/wp-includes/http.php:561 Stack trace: #0 /home/uasenst1/public_html/wp-includes/class-wp-http. php(266): wp_http_validate_url('https://www.lar...') #1 /home/uasenst1/public_html/wp-includes/http.php(48): WP_Http->request('https:// www.lar...', Array) #2 /home/uasenst1/public_html/wp-includes/class-wp-simplepie-file.php(69): wp_safe_remote_request('https://www.lar...' , Array) #3 [internal function]: WP_SimplePie_File->__construct('https://www.lar...', 10, 5, Array, 'SimplePie/1.5.8...', false, Array) # 4 /home/uasenst1/public_html/wp-includes/SimplePie/Registry.php(183): ReflectionClass->newInstanceArgs(Array) #5 /home/uasenst1/public_html/wp-includes/class-simplepie.php(1722): SimplePie_Registry->create('File', Array) #6 /home/uasenst1/public_html/wp-includes/class-simplepie.php(1471): SimplePie->fetch_data(Object(WP_Feed_Cache_Transient)) #7 /home/uasenst1/ public_html/wp-includes/feed.php(832): SimplePie->init() #8 /home/uasenst1/public_html/wp-includes/widgets/class-wp-widget-rss.php(66): fetch_feed(' https://www.lar...') #9 /home/uasenst1/public_html/wp-includes/class-wp-widget.php(394): WP_Widget_RSS->widget(Array, Array) #10 /home/ uasenst1/public_html/wp-includes/widgets.php(837): WP_Widget->display_callback(Array, Array) #11 /home/uasenst1/public_html/wp-content/themes/university-hub-pro/sidebar.php(23 ): dynamic_sidebar('sidebar-1') #12 /home/uasenst1/public_html/wp-includes/template.php(810): require_once('/home/uasenst1/...') #13 /home/uasenst1/ public_html/wp-includes/template.php(745): load_template('/home/uasenst1/...', true, Array) #14 /home/uasenst1/public_html/wp-includes/general-template.php(136 ): locate_template(Array, true, true, Array) #15 /home/uasenst1/public_html/wp-content/themes/university-hub-pro/inc/hook/custom.php(292): get_sidebar() #16 / home/uasenst1/public_html/wp-includes/class-wp-hook.php(324): university_hub_add_sidebar('') #17 /home/uasenst1/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array) #18 /home/uasenst1/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #19 /home/uasenst1/public_html/wp-content/ themes/university-hub-pro/page.php(44): do_action('university_hub_...') #20 /home/uasenst1/public_html/wp-includes/template-loader.php(106): include('/ home/uasenst1/...') #21 /home/uasenst1/public_html/wp-blog-header.php(19): require_once('/home/uasenst1/...') #22 /home/uasenst1/public_html /index.php(17): require('/home/uasenst1/...') #23 {main} thrown in /home/uasenst1/public_html/wp-includes/http.php on line 561