Fatal error: Uncaught TypeError: Argument 1 passed to sfWebResponse::merge() must be an instance of sfWebResponse, null given, called in /var/www/html/lib/vendor/symfony/lib/view/sfViewCacheManager.class.php on line 742 and defined in /var/www/html/cache/amp/prod/config/config_core_compile.yml.php:3815 Stack trace: #0 /var/www/html/lib/vendor/symfony/lib/view/sfViewCacheManager.class.php(742): sfWebResponse->merge(NULL) #1 /var/www/html/lib/vendor/symfony/lib/view/sfPartialView.class.php(146): sfViewCacheManager->getPartialCache('component', '_header', '529037688801596...') #2 /var/www/html/lib/vendor/symfony/lib/helper/PartialHelper.php(143): sfPartialView->getCache() #3 /var/www/html/lib/vendor/symfony/lib/helper/PartialHelper.php(115): get_component('component', 'header', Array) #4 /var/www/html/apps/amp/templates/layout.php(300): include_component('component', 'header', Array) #5 /var/www/html/cache/amp/prod/config/config_core_compile.yml.php(3968): require('/var/www/html/a...') #6 /var/www/html/cache/amp/prod/config/ in /var/www/html/cache/amp/prod/config/config_core_compile.yml.php on line 3815