Fatal error: Uncaught Error: Call to a member function get() on null in /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/query.php:29
Stack trace:
#0 /home/a/arsenikr/gruzdevv.ru/public_html/wp-content/plugins/tst-yandex-feed-master/inc/tst-yandex-feed-core.php(127): get_query_var('yandex_feed')
#1 [internal function]: La_Yandex_Feed_Core->set_empty_feed_20ok_status('HTTP/1.1 301 Mo...', 301)
#2 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/class-wp-hook.php(310): call_user_func_array(Array, Array)
#3 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters('HTTP/1.1 301 Mo...', Array)
#4 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/functions.php(1470): apply_filters('status_header', 'HTTP/1.1 301 Mo...', 301, 'Moved Permanent...', 'HTTP/1.1')
#5 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/pluggable.php(1411): status_header(301)
#6 /home/a/arsenikr/gruzdevv.ru/public_html/wp-content/plugins/clearfy-pro/inc/class-redirect-manager.php(99): wp_redirect('https://gruzdev...', 301)
#7 [internal function]: Clearfy_Redirect_Manager->make_redirect('')
#8 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/class-wp-hook.php(308): call_user_func_array(Array, Array)
#9 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array)
#10 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#11 /home/a/arsenikr/gruzdevv.ru/public_html/wp-settings.php(486): do_action('plugins_loaded')
#12 /home/a/arsenikr/gruzdevv.ru/public_html/wp-config.php(87): require_once('/home/a/arsenik...')
#13 /home/a/arsenikr/gruzdevv.ru/public_html/wp-load.php(50): require_once('/home/a/arsenik...')
#14 /home/a/arsenikr/gruzdevv.ru/public_html/wp-blog-header.php(13): require_once('/home/a/arsenik...')
#15 /home/a/arsenikr/gruzdevv.ru/public_html/index.php(17): require('/home/a/arsenik...')
#16 {main}
  thrown in /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/query.php on line 29

Fatal error: Uncaught Error: Call to a member function get() on null in /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/query.php:29
Stack trace:
#0 /home/a/arsenikr/gruzdevv.ru/public_html/wp-content/plugins/tst-yandex-feed-master/inc/tst-yandex-feed-core.php(127): get_query_var('yandex_feed')
#1 [internal function]: La_Yandex_Feed_Core->set_empty_feed_20ok_status('HTTP/1.1 500 In...', 500)
#2 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/class-wp-hook.php(310): call_user_func_array(Array, Array)
#3 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters('HTTP/1.1 500 In...', Array)
#4 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/functions.php(1470): apply_filters('status_header', 'HTTP/1.1 500 In...', 500, 'Internal Server...', 'HTTP/1.1')
#5 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/functions.php(3775): status_header(500)
#6 [internal function]: _default_wp_die_handler('<div class="wp-...', 'WordPress &rsaq...', Array)
#7 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/functions.php(3722): call_user_func('_default_wp_die...', Object(WP_Error), '', Array)
#8 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/class-wp-fatal-error-handler.php(239): wp_die(Object(WP_Error), '', Array)
#9 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/class-wp-fatal-error-handler.php(154): WP_Fatal_Error_Handler->display_default_error_template(Array, Object(WP_Error))
#10 /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/class-wp-fatal-error-handler.php(58): WP_Fatal_Error_Handler->display_error_template(Array, Object(WP_Error))
#11 [internal function]: WP_Fatal_Error_Handler->handle()
#12 {main}
  thrown in /home/a/arsenikr/gruzdevv.ru/public_html/wp-includes/query.php on line 29