Fatal error: Uncaught Error: Call to a member function get_cart_item_data() on null in /home/g/gryets/www/Blogg/wp-content/plugins/woocommerce-product-addons/includes/class-wc-product-addons-cart.php:184 Stack trace: #0 /home/g/gryets/www/Blogg/wp-includes/class-wp-hook.php(310): WC_Product_Addons_Cart->add_cart_item_data(Array, 1264) #1 /home/g/gryets/www/Blogg/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array) #2 /home/g/gryets/www/Blogg/wp-content/plugins/woocommerce/includes/class-wc-cart.php(1138): apply_filters('woocommerce_add...', Array, 1264, 0, 1) #3 /home/g/gryets/www/Blogg/wp-content/plugins/woocommerce/includes/class-wc-form-handler.php(824): WC_Cart->add_to_cart(1264, 1) #4 /home/g/gryets/www/Blogg/wp-content/plugins/woocommerce/includes/class-wc-form-handler.php(796): WC_Form_Handler::add_to_cart_handler_simple(1264) #5 /home/g/gryets/www/Blogg/wp-includes/class-wp-hook.php(308): WC_Form_Handler::add_to_cart_action('') #6 /home/g/gryets/www/Blogg/wp-includes/class-wp-hook.php(332): WP_Hook->a in /home/g/gryets/www/Blogg/wp-content/plugins/woocommerce-product-addons/includes/class-wc-product-addons-cart.php on line 184