Fatal error: Uncaught Error: Call to undefined function WC() in /data/web/virtuals/226128/virtual/www/domains/probud.cz/wp-content/plugins/woo-fakturoid-3/woo-fakturoid.php:354 Stack trace: #0 /data/web/virtuals/226128/virtual/www/domains/probud.cz/wp-includes/class-wp-hook.php(324): woofak_update_fixes('') #1 /data/web/virtuals/226128/virtual/www/domains/probud.cz/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(Object(Woo_Fakturoid), Array) #2 /data/web/virtuals/226128/virtual/www/domains/probud.cz/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #3 /data/web/virtuals/226128/virtual/www/domains/probud.cz/wp-settings.php(550): do_action('plugins_loaded') #4 /data/web/virtuals/226128/virtual/www/domains/probud.cz/wp-config.php(101): require_once('/data/web/virtu...') #5 /data/web/virtuals/226128/virtual/www/domains/probud.cz/wp-load.php(50): require_once('/data/web/virtu...') #6 /data/web/virtuals/226128/virtual/www/domains/probud.cz/wp-blog-header.php(13): require_once('/data/web/virtu...') #7 /data/web/virtuals/226128/virtual/www/domains/probud.cz/index.php(17): require('/data/web/virtu...') #8 {main} thrown in /data/web/virtuals/226128/virtual/www/domains/probud.cz/wp-content/plugins/woo-fakturoid-3/woo-fakturoid.php on line 354