Fatal error: Uncaught Error: Call to a member function get() on null in /var/app/current/wp-includes/query.php:28 Stack trace: #0 /var/app/current/wp-content/plugins/yandexnews-feed-by-teplitsa/inc/tst-yandex-feed-core.php(119): get_query_var('yandex_feed') #1 /var/app/current/wp-includes/class-wp-hook.php(288): La_Yandex_Feed_Core->set_empty_feed_20ok_status('HTTP/1.1 301 Mo...', 301) #2 /var/app/current/wp-includes/plugin.php(203): WP_Hook->apply_filters('HTTP/1.1 301 Mo...', Array) #3 /var/app/current/wp-includes/functions.php(1089): apply_filters('status_header', 'HTTP/1.1 301 Mo...', 301, 'Moved Permanent...', 'HTTP/1.1') #4 /var/app/current/wp-includes/pluggable.php(1217): status_header(301) #5 /var/app/current/wp-content/plugins/wordpress-seo-premium/premium/classes/redirect/redirect-handler.php(669): wp_redirect('https://crypto....', 301) #6 /var/app/current/wp-content/plugins/wordpress-seo-premium/premium/classes/redirect/redirect-handler.php(294): WPSEO_Redirect_Handler->redirect('https://crypto....', 301) #7 /v in /var/app/current/wp-includes/query.php on line 28