Fatal error: Uncaught Error: Call to undefined method WP::add_query_var() in /home/user2036803/www/magazin-plitki.by/wp-includes/class-wp-taxonomy.php:395
Stack trace:
#0 /home/user2036803/www/magazin-plitki.by/wp-includes/taxonomy.php(427): WP_Taxonomy->add_rewrite_rules()
#1 /home/user2036803/www/magazin-plitki.by/wp-includes/taxonomy.php(79): register_taxonomy('category', 'post', Array)
#2 /home/user2036803/www/magazin-plitki.by/wp-includes/class-wp-hook.php(286): create_initial_taxonomies('')
#3 /home/user2036803/www/magazin-plitki.by/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array)
#4 /home/user2036803/www/magazin-plitki.by/wp-includes/plugin.php(465): WP_Hook->do_action(Array)
#5 /home/user2036803/www/magazin-plitki.by/wp-settings.php(505): do_action('init')
#6 /home/user2036803/www/magazin-plitki.by/wp-config.php(95): require_once('/home/user20368...')
#7 /home/user2036803/www/magazin-plitki.by/wp-load.php(37): require_once('/home/user20368...')
#8 /home/user2036803/www/magazin-plitki.by/wp-b in /home/user2036803/www/magazin-plitki.by/wp-includes/class-wp-taxonomy.php on line 395