Fatal error: Uncaught Error: Call to undefined function wcpdf_log_error() in /data01/virt32901/domeenid/www.saara.ee/epood/wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/Semaphore.php:371 Stack trace: #0 /data01/virt32901/domeenid/www.saara.ee/epood/wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/Semaphore.php(413): WPO\IPS\Semaphore::is_cleanup_scheduled() #1 /data01/virt32901/domeenid/www.saara.ee/epood/wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/Semaphore.php(436): WPO\IPS\Semaphore::schedule_semaphore_cleanup() #2 /data01/virt32901/domeenid/www.saara.ee/epood/wp-includes/class-wp-hook.php(324): WPO\IPS\Semaphore::init_cleanup('') #3 /data01/virt32901/domeenid/www.saara.ee/epood/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #4 /data01/virt32901/domeenid/www.saara.ee/epood/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #5 /data01/virt32901/domeenid/www.saara.ee/epood/wp-settings.php(727): do_action('init') #6 /data01/virt32901/domeenid/www.saara.ee/epood/wp-config.php(79): require_once('/data01/virt329...') #7 /data01/virt32901/domeenid/www.saara.ee/epood/wp-load.php(50): require_once('/data01/virt329...') #8 /data01/virt32901/domeenid/www.saara.ee/epood/wp-blog-header.php(13): require_once('/data01/virt329...') #9 /data01/virt32901/domeenid/www.saara.ee/epood/index.php(17): require('/data01/virt329...') #10 {main} thrown in /data01/virt32901/domeenid/www.saara.ee/epood/wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/Semaphore.php on line 371