Fatal error: Uncaught Error: Call to undefined method Response::getHeaders() in /var/home/batster.eu/www/batster.eu/catalog/controller/event/batster_etag.php:31 Stack trace: #0 /var/home/batster.eu/www/storage/modification/system/engine/action.php(88): ControllerEventBatsterEtag->index('product/categor...', Array, NULL) #1 /var/home/batster.eu/www/batster.eu/system/engine/event.php(62): Action->execute(Object(Registry), Array) #2 /var/home/batster.eu/www/batster.eu/catalog/controller/startup/router.php(30): Event->trigger('controller/prod...', Array) #3 /var/home/batster.eu/www/storage/modification/system/engine/action.php(88): ControllerStartupRouter->index() #4 /var/home/batster.eu/www/batster.eu/system/engine/router.php(67): Action->execute(Object(Registry)) #5 /var/home/batster.eu/www/batster.eu/system/engine/router.php(56): Router->execute(Object(Action)) #6 /var/home/batster.eu/www/batster.eu/system/framework.php(179): Router->dispatch(Object(Action), Object(Action)) #7 /var/home/batster.eu/www/batster.eu/system/sta in /var/home/batster.eu/www/batster.eu/catalog/controller/event/batster_etag.php on line 31