Fatal error: Uncaught TypeError: Product\ERP\Product::getsetMultidimensionalDiscountValue(): Return value must be of type string, Product\ProductNumber returned in /var/www/vhosts/novashape.com/subdomains/hkn.novashape.com/classes/Product/ERP/Product.php:686 Stack trace: #0 /var/www/vhosts/novashape.com/subdomains/hkn.novashape.com/classes/Product/ERP/Product.php(663): Product\ERP\Product->getsetMultidimensionalDiscountValue() #1 /var/www/vhosts/novashape.com/subdomains/hkn.novashape.com/modules/erp_product/multidimensional_discount.php(10): Product\ERP\Product->setMultidimensionalDiscount() #2 /var/www/vhosts/novashape.com/subdomains/hkn.novashape.com/index.php(17): require_once('...') #3 {main} thrown in /var/www/vhosts/novashape.com/subdomains/hkn.novashape.com/classes/Product/ERP/Product.php on line 686