Error 503 Backend fetch failed

Backend fetch failed

Guru Meditation:

XID: 45751990


Varnish cache server

Exception: Warning: Cannot modify header information - headers already sent by (output started at /home/househo0/public_html/app/code/Magedelight/Subscribenow/Observer/Util.php:101) in /home/househo0/public_html/vendor/magento/framework/Stdlib/Cookie/PhpCookieManager.php on line 148 in /home/househo0/public_html/vendor/magento/framework/App/ErrorHandler.php:61 Stack trace: #0 [internal function]: Magento\Framework\App\ErrorHandler->handler(2, 'Cannot modify h...', '/home/househo0/...', 148, Array) #1 /home/househo0/public_html/vendor/magento/framework/Stdlib/Cookie/PhpCookieManager.php(148): setcookie('X-Magento-Vary', '7df78f6deb4c045...', 0, '/', '', true, true) #2 /home/househo0/public_html/vendor/magento/framework/Stdlib/Cookie/PhpCookieManager.php(101): Magento\Framework\Stdlib\Cookie\PhpCookieManager->setCookie('X-Magento-Vary', '7df78f6deb4c045...', Array) #3 /home/househo0/public_html/vendor/magento/framework/App/Response/Http.php(95): Magento\Framework\Stdlib\Cookie\PhpCookieManager->setSensitiveCookie('X-Magento-Vary', '7df78f6deb4c045...', Object(Magento\Framework\Stdlib\Cookie\SensitiveCookieMetadata)) #4 /home/househo0/public_html/generated/code/Magento/Framework/App/Response/Http/Interceptor.php(37): Magento\Framework\App\Response\Http->sendVary() #5 /home/househo0/public_html/vendor/magento/module-page-cache/Model/App/Response/HttpPlugin.php(25): Magento\Framework\App\Response\Http\Interceptor->sendVary() #6 /home/househo0/public_html/vendor/magento/framework/Interception/Interceptor.php(121): Magento\PageCache\Model\App\Response\HttpPlugin->beforeSendResponse(Object(Magento\Framework\App\Response\Http\Interceptor)) #7 /home/househo0/public_html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Response\Http\Interceptor->Magento\Framework\Interception\{closure}() #8 /home/househo0/public_html/generated/code/Magento/Framework/App/Response/Http/Interceptor.php(117): Magento\Framework\App\Response\Http\Interceptor->___callPlugins('sendResponse', Array, Array) #9 /home/househo0/public_html/vendor/magento/framework/App/Http.php(185): Magento\Framework\App\Response\Http\Interceptor->sendResponse() #10 /home/househo0/public_html/vendor/magento/framework/App/Http.php(156): Magento\Framework\App\Http->handleDeveloperMode(Object(Magento\Framework\App\Bootstrap), Object(Exception)) #11 /home/househo0/public_html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Http->catchException(Object(Magento\Framework\App\Bootstrap), Object(Exception)) #12 /home/househo0/public_html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\Http\Interceptor->___callParent('catchException', Array) #13 /home/househo0/public_html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Bootstrap), Object(Exception)) #14 /home/househo0/public_html/generated/code/Magento/Framework/App/Http/Interceptor.php(39): Magento\Framework\App\Http\Interceptor->___callPlugins('catchException', Array, Array) #15 /home/househo0/public_html/vendor/magento/framework/App/Bootstrap.php(261): Magento\Framework\App\Http\Interceptor->catchException(Object(Magento\Framework\App\Bootstrap), Object(Exception)) #16 /home/househo0/crohns.net/index.php(56): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor)) #17 {main}