Fatal error: Uncaught Error: Call to a member function getEffectiveDiscount() on null in /home/radi/public_html/yarnmania_de/lib/ProductSize.class.php:572 Stack trace: #0 /home/radi/public_html/yarnmania_de/prod.php(234): ProductSize->getPrice(true) #1 {main} thrown in /home/radi/public_html/yarnmania_de/lib/ProductSize.class.php on line 572