Fatal error: Uncaught Error: Call to a member function getIdentities() on null in /home/surplus/public_html/vendor/magento/module-catalog/Block/Product/View.php:325 Stack trace: #0 /home/surplus/public_html/generated/code/Solwin/Printpage/Block/Printpage/Interceptor.php(271): Magento\Catalog\Block\Product\View->getIdentities() #1 /home/surplus/public_html/vendor/magento/module-page-cache/Model/Layout/LayoutPlugin.php(71): Solwin\Printpage\Block\Printpage\Interceptor->getIdentities() #2 /home/surplus/public_html/vendor/magento/framework/Interception/Interceptor.php(146): Magento\PageCache\Model\Layout\LayoutPlugin->afterGetOutput(Object(Magento\Framework\View\Layout\Interceptor), '<input name="fo...') #3 /home/surplus/public_html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\View\Layout\Interceptor->Magento\Framework\Interception\{closure}() #4 /home/surplus/public_html/generated/code/Magento/Framework/View/Layout/Interceptor.php(494): Magento\Framework\View\Layout\Interceptor->___callPlugin in /home/surplus/public_html/vendor/magento/module-catalog/Block/Product/View.php on line 325