Fatal error: Uncaught Error: Call to a member function getData() on null in /www/public_html/app/code/TemplateMonster/AjaxCompare/Plugin/Product/Compare/Add.php:56 Stack trace: #0 /www/public_html/vendor/magento/framework/Interception/Interceptor.php(135): TemplateMonster\AjaxCompare\Plugin\Product\Compare\Add->aroundExecute(Object(Magento\Catalog\Controller\Product\Compare\Add\Interceptor), Object(Closure)) #1 /www/public_html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Catalog\Controller\Product\Compare\Add\Interceptor->Magento\Framework\Interception\{closure}() #2 /www/public_html/generated/code/Magento/Catalog/Controller/Product/Compare/Add/Interceptor.php(26): Magento\Catalog\Controller\Product\Compare\Add\Interceptor->___callPlugins('execute', Array, NULL) #3 /www/public_html/vendor/magento/framework/App/Action/Action.php(107): Magento\Catalog\Controller\Product\Compare\Add\Interceptor->execute() #4 /www/public_html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\ in /www/public_html/app/code/TemplateMonster/AjaxCompare/Plugin/Product/Compare/Add.php on line 56