Error: Call to a member function getData() on null in /var/www/magento/app/code/TemplateMonster/AjaxCompare/Plugin/Product/Compare/Add.php:56 Stack trace: #0 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(135): TemplateMonster\AjaxCompare\Plugin\Product\Compare\Add->aroundExecute() #1 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Catalog\Controller\Product\Compare\Add\Interceptor->Magento\Framework\Interception\{closure}() #2 /var/www/magento/generated/code/Magento/Catalog/Controller/Product/Compare/Add/Interceptor.php(23): Magento\Catalog\Controller\Product\Compare\Add\Interceptor->___callPlugins() #3 /var/www/magento/vendor/magento/framework/App/Action/Action.php(111): Magento\Catalog\Controller\Product\Compare\Add\Interceptor->execute() #4 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Action\Action->dispatch() #5 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Catalog\Controller\Product\Compare\Add\Interceptor->___callParent() #6 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Catalog\Controller\Product\Compare\Add\Interceptor->Magento\Framework\Interception\{closure}() #7 /var/www/magento/generated/code/Magento/Catalog/Controller/Product/Compare/Add/Interceptor.php(32): Magento\Catalog\Controller\Product\Compare\Add\Interceptor->___callPlugins() #8 /var/www/magento/vendor/magento/framework/App/FrontController.php(245): Magento\Catalog\Controller\Product\Compare\Add\Interceptor->dispatch() #9 /var/www/magento/vendor/magento/framework/App/FrontController.php(212): Magento\Framework\App\FrontController->getActionResponse() #10 /var/www/magento/vendor/magento/framework/App/FrontController.php(147): Magento\Framework\App\FrontController->processRequest() #11 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\FrontController->dispatch() #12 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\FrontController\Interceptor->___callParent() #13 /var/www/magento/vendor/magento/module-store/App/FrontController/Plugin/RequestPreprocessor.php(99): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}() #14 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(135): Magento\Store\App\FrontController\Plugin\RequestPreprocessor->aroundDispatch() #15 /var/www/magento/app/code/TemplateMonster/LayoutSwitcher/Model/App/Action/ContextPlugin.php(40): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}() #16 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(135): TemplateMonster\LayoutSwitcher\Model\App\Action\ContextPlugin->aroundDispatch() #17 /var/www/magento/vendor/magento/module-page-cache/Model/App/FrontController/BuiltinPlugin.php(71): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}() #18 /var/www/magento/app/code/TemplateMonster/SiteMaintenance/Model/PageCache/App/FrontController/BuiltinPlugin.php(34): Magento\PageCache\Model\App\FrontController\BuiltinPlugin->aroundDispatch() #19 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(135): TemplateMonster\SiteMaintenance\Model\PageCache\App\FrontController\BuiltinPlugin->aroundDispatch() #20 /var/www/magento/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}() #21 /var/www/magento/generated/code/Magento/Framework/App/FrontController/Interceptor.php(23): Magento\Framework\App\FrontController\Interceptor->___callPlugins() #22 /var/www/magento/vendor/magento/framework/App/Http.php(116): Magento\Framework\App\FrontController\Interceptor->dispatch() #23 /var/www/magento/vendor/magento/framework/App/Bootstrap.php(264): Magento\Framework\App\Http->launch() #24 /var/www/magento/pub/index.php(52): Magento\Framework\App\Bootstrap->run() #25 {main}