Failed to start the session because headers have already been sent by "/home/aravisin/www/sites-dev/mvmz/web/app.php" at line 1.

Stack Trace

1. in var/cache/prod/classes.php at line 110 
   107. throw new \RuntimeException('Failed to start the session: already started by PHP.');
   108. }
   109. if (ini_get('session.use_cookies') && headers_sent($file, $line)) {
   110. throw new \RuntimeException(sprintf('Failed to start the session because headers have already been sent by "%s" at line %d.', $file, $line));
   111. }
   112. if (''== session_id() && !session_start()) {
   113. throw new \RuntimeException('Failed to start the session');
2. at NativeSessionStorage ->start ()
   in var/cache/prod/classes.php at line 178 
   175. if ($this->saveHandler->isActive() && !$this->started) {
   176. $this->loadSession();
   177. } elseif (!$this->started) {
   178. $this->start();
   179. }
   180. return $this->bags[$name];
   181. }
3. at NativeSessionStorage ->getBag ('attributes')
   in var/cache/prod/classes.php at line 445 
   442. }
   443. public function set($name, $value)
   444. {
   445. $this->storage->getBag($this->attributeName)->set($name, $value);
   446. }
   447. public function all()
   448. {
4. at Session ->set ('frontUrl', '736974656d61702e786d6c')
   in src/SFCMS/FrontBundle/Controller/PageController.php at line 24 
   21.         $this->modulesExtension  = $this->container->get('SFCMS.modules.twig_extension');
   22.         
   23.         $session = new Session();
   24.         $session->set('frontUrl', $urlExtension->strToHex($url));
   25.         
   26.         $currentEntity = $urlExtension->getByUrl($urlExtension->strToHex($url));
   27.         $defaultContentId = $currentEntity->getDefaultEntityFk();
5. at PageController ->indexAction (object(Request), 'sitemap.xml', null, null)
6. at call_user_func_array (array(object(PageController), 'indexAction'), array(object(Request), 'sitemap.xml', null, null))
   in vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php at line 153 
   150.         $arguments = $event->getArguments();
   152.         // call controller
   153.         $response = call_user_func_array($controller, $arguments);
   155.         // view
   156.         if (!$response instanceof Response) {
7. at HttpKernel ->handleRaw (object(Request), '1')
   in vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php at line 68 
   65.         $request->headers->set('X-Php-Ob-Level', ob_get_level());
   67.         try {
   68.             return $this->handleRaw($request, $type);
   69.         } catch (\Exception $e) {
   70.             if ($e instanceof ConflictingHeadersException) {
   71.                 $e = new BadRequestHttpException('The request headers contain conflicting information regarding the origin of this request.', $e);
8. at HttpKernel ->handle (object(Request), '1', true)
   in var/bootstrap.php.cache at line 1443 
   1440. if (false === $this->booted) {
   1441. $this->boot();
   1442. }
   1443. return $this->getHttpKernel()->handle($request, $type, $catch);
   1444. }
   1445. protected function getHttpKernel()
   1446. {
9. at Kernel ->handle (object(Request))
   in web/app.php at line 50 
   47. // When using the HttpCache, you need to call the method in your front controller instead of relying on the configuration parameter
   48. //Request::enableHttpMethodParameterOverride();
   49. $request = Request::createFromGlobals();
   50. $response = $kernel->handle($request);
   51. $response->send();
   52. $kernel->terminate($request, $response);

Stack Trace (Plain Text) 

[1] RuntimeException: Failed to start the session because headers have already been sent by "/home/aravisin/www/sites-dev/mvmz/web/app.php" at line 1.
    at n/a
        in /home/aravisin/www/sites-dev/mvmz/var/cache/prod/classes.php line 110

    at Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->start()
        in /home/aravisin/www/sites-dev/mvmz/var/cache/prod/classes.php line 178

    at Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->getBag('attributes')
        in /home/aravisin/www/sites-dev/mvmz/var/cache/prod/classes.php line 445

    at Symfony\Component\HttpFoundation\Session\Session->set('frontUrl', '736974656d61702e786d6c')
        in /home/aravisin/www/sites-dev/mvmz/src/SFCMS/FrontBundle/Controller/PageController.php line 24

    at SFCMS\FrontBundle\Controller\PageController->indexAction(object(Request), 'sitemap.xml', null, null)
        in  line 

    at call_user_func_array(array(object(PageController), 'indexAction'), array(object(Request), 'sitemap.xml', null, null))
        in /home/aravisin/www/sites-dev/mvmz/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php line 153

    at Symfony\Component\HttpKernel\HttpKernel->handleRaw(object(Request), '1')
        in /home/aravisin/www/sites-dev/mvmz/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php line 68

    at Symfony\Component\HttpKernel\HttpKernel->handle(object(Request), '1', true)
        in /home/aravisin/www/sites-dev/mvmz/var/bootstrap.php.cache line 1443

    at Symfony\Component\HttpKernel\Kernel->handle(object(Request))
        in /home/aravisin/www/sites-dev/mvmz/web/app.php line 50