Fatal error: Uncaught Error: Call to undefined method Magento\Catalog\Model\Product\Type\Simple::getUsedProducts() in /chroot/home/ae76e44b/2192e093c6.nxcli.io/app/design/frontend/thirdmill/watertanks/Magento_Catalog/templates/product/view/custom_specifications.phtml:146 Stack trace: #0 /chroot/home/ae76e44b/2192e093c6.nxcli.io/app/design/frontend/thirdmill/watertanks/Magento_Catalog/templates/product/view/custom_specifications.phtml(55): getSimpleProductInfo(Object(Magento\Catalog\Model\Product\Interceptor)) #1 /chroot/home/ae76e44b/2192e093c6.nxcli.io/vendor/magento/framework/View/TemplateEngine/Php.php(59): include('/chroot/home/ae...') #2 /chroot/home/ae76e44b/2192e093c6.nxcli.io/vendor/magento/framework/View/Element/Template.php(270): Magento\Framework\View\TemplateEngine\Php->render(Object(Thirdmill\Watertanks\Block\Product\View\Description), '/chroot/home/ae...', Array) #3 /chroot/home/ae76e44b/2192e093c6.nxcli.io/vendor/magento/framework/View/Element/Template.php(300): Magento\Framework\View\Element\Template->fetc in /chroot/home/ae76e44b/2192e093c6.nxcli.io/app/design/frontend/thirdmill/watertanks/Magento_Catalog/templates/product/view/custom_specifications.phtml on line 146