Symfony Exception

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RuntimeException

HTTP 500 Internal Server Error

Failed to start the session because headers have already been sent by "/var/www/html/icthelpdesk/public/index.php(1) : eval()'d code" at line 1.

Exception

RuntimeException

in vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php (line 149)
  1.         if (\PHP_SESSION_ACTIVE === session_status()) {
  2.             throw new \RuntimeException('Failed to start the session: already started by PHP.');
  3.         }
  5.         if (filter_var(ini_get('session.use_cookies'), FILTER_VALIDATE_BOOLEAN) && headers_sent($file, $line)) {
  6.             throw new \RuntimeException(sprintf('Failed to start the session because headers have already been sent by "%s" at line %d.', $file, $line));
  7.         }
  9.         // ok to try and start the session
  10.         if (!session_start()) {
  11.             throw new \RuntimeException('Failed to start the session');
in vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php->start (line 322)
  1.         }
  3.         if (!$this->started && $this->saveHandler->isActive()) {
  4.             $this->loadSession();
  5.         } elseif (!$this->started) {
  6.             $this->start();
  7.         }
  9.         return $this->bags[$name];
  10.     }
in vendor/symfony/http-foundation/Session/Session.php->getBag (line 256)
  1.     /**
  2.      * {@inheritdoc}
  3.      */
  4.     public function getBag($name)
  5.     {
  6.         $bag = $this->storage->getBag($name);
  8.         return method_exists($bag, 'getBag') ? $bag->getBag() : $bag;
  9.     }
  11.     /**
in vendor/symfony/http-foundation/Session/Session.php->getBag (line 280)
  1.      *
  2.      * @return AttributeBagInterface
  3.      */
  4.     private function getAttributeBag()
  5.     {
  6.         return $this->getBag($this->attributeName);
  7.     }
  8. }
in vendor/symfony/http-foundation/Session/Session.php->getAttributeBag (line 73)
  1.     /**
  2.      * {@inheritdoc}
  3.      */
  4.     public function get($name, $default = null)
  5.     {
  6.         return $this->getAttributeBag()->get($name, $default);
  7.     }
  9.     /**
  10.      * {@inheritdoc}
  11.      */
in vendor/uvdesk/support-center-bundle/Controller/Customer.php->get (line 98)
  1.             return $this->redirect($this->generateUrl('helpdesk_knowledgebase'));
  2.         }
  4.         $session = $request->getSession();
  6.         $error = $session->get(Security::AUTHENTICATION_ERROR);
  7.         $session->remove(Security::AUTHENTICATION_ERROR);
  9.         return $this->render('@UVDeskSupportCenter/Knowledgebase/login.html.twig', [
  10.             'searchDisable' => true,
  11.             'last_username' => $session->get(Security::LAST_USERNAME),
in vendor/symfony/http-kernel/HttpKernel.php->login (line 151)
  1.         $this->dispatcher->dispatch($event, KernelEvents::CONTROLLER_ARGUMENTS);
  2.         $controller = $event->getController();
  3.         $arguments = $event->getArguments();
  5.         // call controller
  6.         $response = $controller(...$arguments);
  8.         // view
  9.         if (!$response instanceof Response) {
  10.             $event = new ViewEvent($this, $request, $type, $response);
  11.             $this->dispatcher->dispatch($event, KernelEvents::VIEW);
in vendor/symfony/http-kernel/HttpKernel.php->handleRaw (line 68)
  1.     public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQUEST, $catch = true)
  2.     {
  3.         $request->headers->set('X-Php-Ob-Level', (string) ob_get_level());
  5.         try {
  6.             return $this->handleRaw($request, $type);
  7.         } catch (\Exception $e) {
  8.             if ($e instanceof RequestExceptionInterface) {
  9.                 $e = new BadRequestHttpException($e->getMessage(), $e);
  10.             }
  11.             if (false === $catch) {
in vendor/symfony/http-kernel/Kernel.php->handle (line 198)
  1.         $this->boot();
  2.         ++$this->requestStackSize;
  3.         $this->resetServices = true;
  5.         try {
  6.             return $this->getHttpKernel()->handle($request, $type, $catch);
  7.         } finally {
  8.             --$this->requestStackSize;
  9.         }
  10.     }
Kernel->handle() in public/index.php (line 35)
  1.     Request::setTrustedHosts([$trustedHosts]);
  2. }
  4. $kernel = new Kernel($_SERVER['APP_ENV'], (bool) $_SERVER['APP_DEBUG']);
  5. $request = Request::createFromGlobals();
  6. $response = $kernel->handle($request);
  7. $response->send();
  8. $kernel->terminate($request, $response);?>

Logs 1

Level Channel Message
INFO 19:29:02 php Deprecated: Required parameter $timestamp follows optional parameter $user 
{
    "exception": {}
}
INFO 19:29:02 request Matched route "helpdesk_customer_login". 
{
    "route": "helpdesk_customer_login",
    "route_parameters": {
        "_route": "helpdesk_customer_login",
        "_controller": "Webkul\\UVDesk\\SupportCenterBundle\\Controller\\Customer::login",
        "_locale": "en"
    },
    "request_uri": "https://atu.edu.gh/icthelpdesk/public/en/customer/login",
    "method": "GET"
}
INFO 19:29:02 security Populated the TokenStorage with an anonymous Token.
DEBUG 19:29:02 event Notified event "debug.security.authorization.vote" to listener "Symfony\Bundle\SecurityBundle\EventListener\VoteListener::onVoterVote". 
{
    "event": "debug.security.authorization.vote",
    "listener": "Symfony\\Bundle\\SecurityBundle\\EventListener\\VoteListener::onVoterVote"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\DebugHandlersListener::configure". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\DebugHandlersListener::configure"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\ValidateRequestListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\ValidateRequestListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\SessionListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\SessionListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\LocaleListener::setDefaultLocale". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\LocaleListener::setDefaultLocale"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\RouterListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\RouterListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Bundle\FrameworkBundle\EventListener\ResolveControllerNameSubscriber::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Bundle\\FrameworkBundle\\EventListener\\ResolveControllerNameSubscriber::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\LocaleListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\LocaleListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\LocaleAwareListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\LocaleAwareListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Bundle\SecurityBundle\Debug\TraceableFirewallListener::configureLogoutUrlGenerator". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Bundle\\SecurityBundle\\Debug\\TraceableFirewallListener::configureLogoutUrlGenerator"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Bundle\SecurityBundle\Debug\TraceableFirewallListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Bundle\\SecurityBundle\\Debug\\TraceableFirewallListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Knp\Bundle\PaginatorBundle\Subscriber\SlidingPaginationSubscriber::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Knp\\Bundle\\PaginatorBundle\\Subscriber\\SlidingPaginationSubscriber::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Webkul\UVDesk\ExtensionFrameworkBundle\EventListener\Kernel::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Webkul\\UVDesk\\ExtensionFrameworkBundle\\EventListener\\Kernel::onKernelRequest"
}
INFO 19:29:02 php Deprecated: Method ReflectionParameter::getClass() is deprecated 
{
    "exception": {}
}
INFO 19:29:02 php Deprecated: Method ReflectionParameter::getClass() is deprecated 
{
    "exception": {}
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Symfony\Bundle\FrameworkBundle\DataCollector\RouterDataCollector::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Symfony\\Bundle\\FrameworkBundle\\DataCollector\\RouterDataCollector::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Symfony\Component\HttpKernel\DataCollector\RequestDataCollector::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Symfony\\Component\\HttpKernel\\DataCollector\\RequestDataCollector::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\ControllerListener::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\ControllerListener::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\ParamConverterListener::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\ParamConverterListener::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\HttpCacheListener::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\HttpCacheListener::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\TemplateListener::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\TemplateListener::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller_arguments" to listener "Webkul\UVDesk\ExtensionFrameworkBundle\EventListener\Kernel::onKernelControllerarguments". 
{
    "event": "kernel.controller_arguments",
    "listener": "Webkul\\UVDesk\\ExtensionFrameworkBundle\\EventListener\\Kernel::onKernelControllerarguments"
}
DEBUG 19:29:02 event Notified event "kernel.controller_arguments" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\SecurityListener::onKernelControllerArguments". 
{
    "event": "kernel.controller_arguments",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\SecurityListener::onKernelControllerArguments"
}
DEBUG 19:29:02 event Notified event "kernel.controller_arguments" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\IsGrantedListener::onKernelControllerArguments". 
{
    "event": "kernel.controller_arguments",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\IsGrantedListener::onKernelControllerArguments"
}
INFO 19:29:02 php User Deprecated: Creating Doctrine\ORM\Mapping\UnderscoreNamingStrategy without making it number aware is deprecated and will be removed in Doctrine ORM 3.0. 
{
    "exception": {}
}
INFO 19:29:02 php User Deprecated: The "Doctrine\Common\Inflector\Inflector::classify" method is deprecated and will be dropped in doctrine/inflector 2.0. Please update to the new Inflector API. 
{
    "exception": {}
}
DEBUG 19:29:02 doctrine SELECT t0.id AS id_1, t0.name AS name_2, t0.code AS code_3, t0.logo AS logo_4, t0.theme_color AS theme_color_5, t0.favicon AS favicon_6, t0.created_at AS created_at_7, t0.updated_at AS updated_at_8, t0.is_active AS is_active_9, t0.timezone AS timezone_10, t0.timeformat AS timeformat_11 FROM uv_website t0 WHERE t0.code = ? LIMIT 1 
[
    "knowledgebase"
]
DEBUG 19:29:02 doctrine SELECT t0.id AS id_1, t0.status AS status_2, t0.brand_color AS brand_color_3, t0.page_background_color AS page_background_color_4, t0.header_background_color AS header_background_color_5, t0.link_color AS link_color_6, t0.article_text_color AS article_text_color_7, t0.ticket_create_option AS ticket_create_option_8, t0.site_description AS site_description_9, t0.meta_description AS meta_description_10, t0.meta_keywords AS meta_keywords_11, t0.homepage_content AS homepage_content_12, t0.white_list AS white_list_13, t0.black_list AS black_list_14, t0.created_at AS created_at_15, t0.updated_at AS updated_at_16, t0.broadcast_message AS broadcast_message_17, t0.disable_customer_login AS disable_customer_login_18, t0.script AS script_19, t0.custom_css AS custom_css_20, t0.is_active AS is_active_21, t0.header_links AS header_links_22, t0.footer_links AS footer_links_23, t0.banner_background_color AS banner_background_color_24, t0.link_hover_color AS link_hover_color_25, t0.login_required_to_create AS login_required_to_create_26, t0.remove_customer_login_button AS remove_customer_login_button_27, t0.remove_branding_content AS remove_branding_content_28, t0.website AS website_29 FROM uv_website_knowledgebase t0 WHERE t0.website = ? AND t0.status = ? LIMIT 1 
[
    2,
    1
]
DEBUG 19:29:02 event Notified event "debug.security.authorization.vote" to listener "Symfony\Bundle\SecurityBundle\EventListener\VoteListener::onVoterVote". 
{
    "event": "debug.security.authorization.vote",
    "listener": "Symfony\\Bundle\\SecurityBundle\\EventListener\\VoteListener::onVoterVote"
}
DEBUG 19:29:02 event Notified event "debug.security.authorization.vote" to listener "Symfony\Bundle\SecurityBundle\EventListener\VoteListener::onVoterVote". 
{
    "event": "debug.security.authorization.vote",
    "listener": "Symfony\\Bundle\\SecurityBundle\\EventListener\\VoteListener::onVoterVote"
}
DEBUG 19:29:02 event Notified event "debug.security.authorization.vote" to listener "Symfony\Bundle\SecurityBundle\EventListener\VoteListener::onVoterVote". 
{
    "event": "debug.security.authorization.vote",
    "listener": "Symfony\\Bundle\\SecurityBundle\\EventListener\\VoteListener::onVoterVote"
}
DEBUG 19:29:02 event Notified event "debug.security.authorization.vote" to listener "Symfony\Bundle\SecurityBundle\EventListener\VoteListener::onVoterVote". 
{
    "event": "debug.security.authorization.vote",
    "listener": "Symfony\\Bundle\\SecurityBundle\\EventListener\\VoteListener::onVoterVote"
}
INFO 19:29:02 php User Deprecated: The "Doctrine\Common\Inflector\Inflector::classify" method is deprecated and will be dropped in doctrine/inflector 2.0. Please update to the new Inflector API. 
{
    "exception": {}
}
DEBUG 19:29:02 doctrine SELECT t0.id AS id_1, t0.name AS name_2, t0.code AS code_3, t0.logo AS logo_4, t0.theme_color AS theme_color_5, t0.favicon AS favicon_6, t0.created_at AS created_at_7, t0.updated_at AS updated_at_8, t0.is_active AS is_active_9, t0.timezone AS timezone_10, t0.timeformat AS timeformat_11 FROM uv_website t0 WHERE t0.code = ? LIMIT 1 
[
    "knowledgebase"
]
DEBUG 19:29:02 doctrine SELECT t0.id AS id_1, t0.status AS status_2, t0.brand_color AS brand_color_3, t0.page_background_color AS page_background_color_4, t0.header_background_color AS header_background_color_5, t0.link_color AS link_color_6, t0.article_text_color AS article_text_color_7, t0.ticket_create_option AS ticket_create_option_8, t0.site_description AS site_description_9, t0.meta_description AS meta_description_10, t0.meta_keywords AS meta_keywords_11, t0.homepage_content AS homepage_content_12, t0.white_list AS white_list_13, t0.black_list AS black_list_14, t0.created_at AS created_at_15, t0.updated_at AS updated_at_16, t0.broadcast_message AS broadcast_message_17, t0.disable_customer_login AS disable_customer_login_18, t0.script AS script_19, t0.custom_css AS custom_css_20, t0.is_active AS is_active_21, t0.header_links AS header_links_22, t0.footer_links AS footer_links_23, t0.banner_background_color AS banner_background_color_24, t0.link_hover_color AS link_hover_color_25, t0.login_required_to_create AS login_required_to_create_26, t0.remove_customer_login_button AS remove_customer_login_button_27, t0.remove_branding_content AS remove_branding_content_28, t0.website AS website_29 FROM uv_website_knowledgebase t0 WHERE t0.website = ? AND t0.is_active = ? LIMIT 1 
[
    2,
    1
]
CRITICAL 19:29:02 request Uncaught PHP Exception RuntimeException: "Failed to start the session because headers have already been sent by "/var/www/html/icthelpdesk/public/index.php(1) : eval()'d code" at line 1." at /var/www/html/icthelpdesk/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php line 149 
{
    "exception": {}
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\DebugHandlersListener::configure". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\DebugHandlersListener::configure"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\ValidateRequestListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\ValidateRequestListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\SessionListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\SessionListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\LocaleListener::setDefaultLocale". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\LocaleListener::setDefaultLocale"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\RouterListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\RouterListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Bundle\FrameworkBundle\EventListener\ResolveControllerNameSubscriber::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Bundle\\FrameworkBundle\\EventListener\\ResolveControllerNameSubscriber::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\LocaleListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\LocaleListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener\LocaleAwareListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Component\\HttpKernel\\EventListener\\LocaleAwareListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Bundle\SecurityBundle\Debug\TraceableFirewallListener::configureLogoutUrlGenerator". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Bundle\\SecurityBundle\\Debug\\TraceableFirewallListener::configureLogoutUrlGenerator"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Symfony\Bundle\SecurityBundle\Debug\TraceableFirewallListener::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Symfony\\Bundle\\SecurityBundle\\Debug\\TraceableFirewallListener::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Knp\Bundle\PaginatorBundle\Subscriber\SlidingPaginationSubscriber::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Knp\\Bundle\\PaginatorBundle\\Subscriber\\SlidingPaginationSubscriber::onKernelRequest"
}
DEBUG 19:29:02 event Notified event "kernel.request" to listener "Webkul\UVDesk\ExtensionFrameworkBundle\EventListener\Kernel::onKernelRequest". 
{
    "event": "kernel.request",
    "listener": "Webkul\\UVDesk\\ExtensionFrameworkBundle\\EventListener\\Kernel::onKernelRequest"
}
INFO 19:29:02 php Deprecated: Method ReflectionParameter::getClass() is deprecated 
{
    "exception": {}
}
INFO 19:29:02 php Deprecated: Method ReflectionParameter::getClass() is deprecated 
{
    "exception": {}
}
INFO 19:29:02 php Deprecated: Method ReflectionParameter::getClass() is deprecated 
{
    "exception": {}
}
INFO 19:29:02 php Deprecated: Method ReflectionParameter::getClass() is deprecated 
{
    "exception": {}
}
INFO 19:29:02 php Deprecated: Method ReflectionParameter::getClass() is deprecated 
{
    "exception": {}
}
INFO 19:29:02 php Deprecated: Method ReflectionParameter::getClass() is deprecated 
{
    "exception": {}
}
INFO 19:29:02 php Deprecated: Method ReflectionParameter::getClass() is deprecated 
{
    "exception": {}
}
INFO 19:29:02 php Deprecated: Method ReflectionParameter::getClass() is deprecated 
{
    "exception": {}
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Symfony\Bundle\FrameworkBundle\DataCollector\RouterDataCollector::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Symfony\\Bundle\\FrameworkBundle\\DataCollector\\RouterDataCollector::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Symfony\Component\HttpKernel\DataCollector\RequestDataCollector::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Symfony\\Component\\HttpKernel\\DataCollector\\RequestDataCollector::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\ControllerListener::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\ControllerListener::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\ParamConverterListener::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\ParamConverterListener::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\HttpCacheListener::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\HttpCacheListener::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\TemplateListener::onKernelController". 
{
    "event": "kernel.controller",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\TemplateListener::onKernelController"
}
DEBUG 19:29:02 event Notified event "kernel.controller_arguments" to listener "Webkul\UVDesk\ExtensionFrameworkBundle\EventListener\Kernel::onKernelControllerarguments". 
{
    "event": "kernel.controller_arguments",
    "listener": "Webkul\\UVDesk\\ExtensionFrameworkBundle\\EventListener\\Kernel::onKernelControllerarguments"
}
DEBUG 19:29:02 event Notified event "kernel.controller_arguments" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\SecurityListener::onKernelControllerArguments". 
{
    "event": "kernel.controller_arguments",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\SecurityListener::onKernelControllerArguments"
}
DEBUG 19:29:02 event Notified event "kernel.controller_arguments" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\IsGrantedListener::onKernelControllerArguments". 
{
    "event": "kernel.controller_arguments",
    "listener": "Sensio\\Bundle\\FrameworkExtraBundle\\EventListener\\IsGrantedListener::onKernelControllerArguments"
}

Stack Trace

RuntimeException 

RuntimeException:
Failed to start the session because headers have already been sent by "/var/www/html/icthelpdesk/public/index.php(1) : eval()'d code" at line 1.

  at vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php:149
  at Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->start()
     (vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php:322)
  at Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->getBag()
     (vendor/symfony/http-foundation/Session/Session.php:256)
  at Symfony\Component\HttpFoundation\Session\Session->getBag()
     (vendor/symfony/http-foundation/Session/Session.php:280)
  at Symfony\Component\HttpFoundation\Session\Session->getAttributeBag()
     (vendor/symfony/http-foundation/Session/Session.php:73)
  at Symfony\Component\HttpFoundation\Session\Session->get()
     (vendor/uvdesk/support-center-bundle/Controller/Customer.php:98)
  at Webkul\UVDesk\SupportCenterBundle\Controller\Customer->login()
     (vendor/symfony/http-kernel/HttpKernel.php:151)
  at Symfony\Component\HttpKernel\HttpKernel->handleRaw()
     (vendor/symfony/http-kernel/HttpKernel.php:68)
  at Symfony\Component\HttpKernel\HttpKernel->handle()
     (vendor/symfony/http-kernel/Kernel.php:198)
  at Symfony\Component\HttpKernel\Kernel->handle()
     (public/index.php:35)