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(1/1) ContextErrorException

Notice: Trying to access array offset on value of type null

in ProductController.php line 1169
at ProductControllerCore->getProductMinimalQuantity()in ProductController.php line 1111
at ProductControllerCore->getTemplateVarProduct()in EventDataProvider.php line 152
at EventDataProvider->getProductPageData()in EventDataProvider.php line 114
at EventDataProvider->generateEventData()in EventDispatcher.php line 90
at EventDispatcher->dispatch()in ps_facebook.php line 339
at Ps_facebook->hookDisplayHeader()in Hook.php line 1007
at HookCore::coreCallHook()in Hook.php line 431
at HookCore::callHookOn()in Hook.php line 944
at HookCore::exec()in FrontController.php line 598
at FrontControllerCore->initContent()in ProductController.php line 417
at ProductControllerCore->initContent()in Controller.php line 306
at ControllerCore->run()in Dispatcher.php line 525
at DispatcherCore->dispatch()in index.php line 28