Fatal error: Uncaught Error: Call to undefined method Magento\Catalog\Model\Product\Type\Simple::getUsedProducts() in /domains/m2.evaris.sawblade.org.uk/http/vendor/magento/module-configurable-product/Block/Product/View/Type/Configurable.php:185 Stack trace: #0 /domains/m2.evaris.sawblade.org.uk/http/app/code/Absolute/GradedProducts/Block/Grades.php(47): Magento\ConfigurableProduct\Block\Product\View\Type\Configurable->getAllowProducts() #1 /domains/m2.evaris.sawblade.org.uk/http/app/design/frontend/Smartwave/evaris_theme/Magento_Catalog/templates/product/view/configurable-tabs.phtml(9): Absolute\GradedProducts\Block\Grades->getGradedBlocks() #2 /domains/m2.evaris.sawblade.org.uk/http/vendor/magento/framework/View/TemplateEngine/Php.php(59): include('/domains/m2.eva...') #3 /domains/m2.evaris.sawblade.org.uk/http/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\View\TemplateEngine\Php->render(Object(Absolute\GradedProducts\Block\Grades\Interceptor), '/domains/m2.eva...', Array) #4 /domains/m2.e in /domains/m2.evaris.sawblade.org.uk/http/vendor/magento/module-configurable-product/Block/Product/View/Type/Configurable.php on line 185