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Accessibility

Our e-commerce website was designed and developed with the goal of being compliant with Web Content Accessibility Guidelines (WCAG) 2.1 – Level AA, to ensure an inclusive experience for all users, regardless of their abilities.

We used automatic verification tools, such as axe DevTools, that did not find any accessibility errors in the pages analysed.

Although our commitment to accessibility is constant, the breadth and evolution of the platform may cause temporary misalignments between the various pages in terms of accessibility. Making updates and improvements is an ongoing effort that we are constantly engaged in, by looking for solutions that bring all areas of the platform to the same level of general accessibility. Our team carries out periodic audits to constantly monitor and improve the website accessibility.

If you encounter an accessibility issues, we ask you to report it to us specifying:

  • The selected country and language,
  • The URL of the relevant page,
  • A detailed description of the problem encountered.

We will get back to you as soon as possible to make the requested information accessible or provide a suitable alternative.
For reports and requests relating to accessibility, please write to the following e-mail address: canadian.support@ecommerceonline.it



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Attempt #
Failed to start the session because headers have already been sent by "/var/www/canadian/vendor/symfony/http-foundation/Response.php" at line 382. (500 Internal Server Error)

Symfony Exception

Symfony Docs

ValueError RuntimeException

HTTP 500 Internal Server Error

Failed to start the session because headers have already been sent by "/var/www/canadian/vendor/symfony/http-foundation/Response.php" at line 382.

Exceptions 2

RuntimeException

in /var/www/canadian/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php (line 116)
  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_BOOL) && 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.         $sessionId = $_COOKIE[session_name()] ?? null;
  10.         /*
  11.          * Explanation of the session ID regular expression: `/^[a-zA-Z0-9,-]{22,250}$/`.
in /var/www/canadian/vendor/symfony/http-foundation/Session/Session.php -> start (line 59)
  1.         $this->registerBag($flashes);
  2.     }
  4.     public function start(): bool
  5.     {
  6.         return $this->storage->start();
  7.     }
  9.     public function has(string $name): bool
  10.     {
  11.         return $this->getAttributeBag()->has($name);
Session->start() in /var/www/canadian/src/EventListener/RequestListener.php (line 239)
  2.     public function onKernelRequest(RequestEvent $event): bool
  3.     {
  4.         //Inizializzo la sessione
  5.         if (!$this->currentRequest->getSession()->isStarted()) {
  6.             $this->currentRequest->getSession()->start();
  7.             $this->currentRequest->getSession()->set('nrProductsInCart', 0);
  8.         }
  10.         if (!$this->currentRequest->getSession()->has('nrListini')) {
  11.             $this->currentRequest->getSession()->set('nrListini', $this->nrListini);
in /var/www/canadian/vendor/symfony/event-dispatcher/Debug/WrappedListener.php -> onKernelRequest (line 115)
  1.         $this->priority ??= $dispatcher->getListenerPriority($eventName, $this->listener);
  3.         $e = $this->stopwatch->start($this->name, 'event_listener');
  5.         try {
  6.             ($this->optimizedListener ?? $this->listener)($event, $eventName, $dispatcher);
  7.         } finally {
  8.             if ($e->isStarted()) {
  9.                 $e->stop();
  10.             }
  11.         }
in /var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php -> __invoke (line 206)
  2.         foreach ($listeners as $listener) {
  3.             if ($stoppable && $event->isPropagationStopped()) {
  4.                 break;
  5.             }
  6.             $listener($event, $eventName, $this);
  7.         }
  8.     }
  10.     /**
  11.      * Sorts the internal list of listeners for the given event by priority.
in /var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php -> callListeners (line 56)
  1.         } else {
  2.             $listeners = $this->getListeners($eventName);
  3.         }
  5.         if ($listeners) {
  6.             $this->callListeners($listeners, $eventName, $event);
  7.         }
  9.         return $event;
  10.     }
in /var/www/canadian/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php -> dispatch (line 126)
  1.         try {
  2.             $this->beforeDispatch($eventName, $event);
  3.             try {
  4.                 $e = $this->stopwatch->start($eventName, 'section');
  5.                 try {
  6.                     $this->dispatcher->dispatch($event, $eventName);
  7.                 } finally {
  8.                     if ($e->isStarted()) {
  9.                         $e->stop();
  10.                     }
  11.                 }
in /var/www/canadian/vendor/symfony/http-kernel/HttpKernel.php -> dispatch (line 159)
  1.      */
  2.     private function handleRaw(Request $request, int $type = self::MAIN_REQUEST): Response
  3.     {
  4.         // request
  5.         $event = new RequestEvent($this, $request, $type);
  6.         $this->dispatcher->dispatch($event, KernelEvents::REQUEST);
  8.         if ($event->hasResponse()) {
  9.             return $this->filterResponse($event->getResponse(), $request, $type);
  10.         }
in /var/www/canadian/vendor/symfony/http-kernel/HttpKernel.php -> handleRaw (line 76)
  1.         $request->headers->set('X-Php-Ob-Level', (string) ob_get_level());
  3.         $this->requestStack->push($request);
  4.         $response = null;
  5.         try {
  6.             return $response = $this->handleRaw($request, $type);
  7.         } catch (\Throwable $e) {
  8.             if ($e instanceof \Error && !$this->handleAllThrowables) {
  9.                 throw $e;
  10.             }
in /var/www/canadian/vendor/symfony/http-kernel/EventListener/ErrorListener.php -> handle (line 99)
  1.         }
  3.         $request = $this->duplicateRequest($throwable, $event->getRequest());
  5.         try {
  6.             $response = $event->getKernel()->handle($request, HttpKernelInterface::SUB_REQUEST, false);
  7.         } catch (\Exception $e) {
  8.             $f = FlattenException::createFromThrowable($e);
  10.             $this->logException($e, \sprintf('Exception thrown when handling an exception (%s: %s at %s line %s)', $f->getClass(), $f->getMessage(), basename($e->getFile()), $e->getLine()));
in /var/www/canadian/vendor/symfony/event-dispatcher/Debug/WrappedListener.php -> onKernelException (line 115)
  1.         $this->priority ??= $dispatcher->getListenerPriority($eventName, $this->listener);
  3.         $e = $this->stopwatch->start($this->name, 'event_listener');
  5.         try {
  6.             ($this->optimizedListener ?? $this->listener)($event, $eventName, $dispatcher);
  7.         } finally {
  8.             if ($e->isStarted()) {
  9.                 $e->stop();
  10.             }
  11.         }
in /var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php -> __invoke (line 206)
  2.         foreach ($listeners as $listener) {
  3.             if ($stoppable && $event->isPropagationStopped()) {
  4.                 break;
  5.             }
  6.             $listener($event, $eventName, $this);
  7.         }
  8.     }
  10.     /**
  11.      * Sorts the internal list of listeners for the given event by priority.
in /var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php -> callListeners (line 56)
  1.         } else {
  2.             $listeners = $this->getListeners($eventName);
  3.         }
  5.         if ($listeners) {
  6.             $this->callListeners($listeners, $eventName, $event);
  7.         }
  9.         return $event;
  10.     }
in /var/www/canadian/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php -> dispatch (line 126)
  1.         try {
  2.             $this->beforeDispatch($eventName, $event);
  3.             try {
  4.                 $e = $this->stopwatch->start($eventName, 'section');
  5.                 try {
  6.                     $this->dispatcher->dispatch($event, $eventName);
  7.                 } finally {
  8.                     if ($e->isStarted()) {
  9.                         $e->stop();
  10.                     }
  11.                 }
in /var/www/canadian/vendor/symfony/http-kernel/HttpKernel.php -> dispatch (line 241)
  1.      * Handles a throwable by trying to convert it to a Response.
  2.      */
  3.     private function handleThrowable(\Throwable $e, Request $request, int $type): Response
  4.     {
  5.         $event = new ExceptionEvent($this, $request, $type, $e, isKernelTerminating: $this->terminating);
  6.         $this->dispatcher->dispatch($event, KernelEvents::EXCEPTION);
  8.         // a listener might have replaced the exception
  9.         $e = $event->getThrowable();
  11.         if (!$event->hasResponse()) {
in /var/www/canadian/vendor/symfony/http-kernel/HttpKernel.php -> handleThrowable (line 134)
  1.         if ($pop = $request !== $this->requestStack->getMainRequest()) {
  2.             $this->requestStack->push($request);
  3.         }
  5.         try {
  6.             $response = $this->handleThrowable($exception, $request, self::MAIN_REQUEST);
  7.         } finally {
  8.             if ($pop) {
  9.                 $this->requestStack->pop();
  10.             }
  11.         }
in /var/www/canadian/vendor/symfony/http-kernel/EventListener/DebugHandlersListener.php -> terminateWithException (line 84)
  1.                         if ($hasRun) {
  2.                             throw $e;
  3.                         }
  5.                         $hasRun = true;
  6.                         $kernel->terminateWithException($e, $request);
  7.                     };
  8.                 }
  9.             } elseif ($event instanceof ConsoleEvent && $app = $event->getCommand()->getApplication()) {
  10.                 $output = $event->getOutput();
  11.                 if ($output instanceof ConsoleOutputInterface) {
in /var/www/canadian/vendor/symfony/error-handler/ErrorHandler.php :: Symfony\Component\HttpKernel\EventListener\{closure} (line 538)
  1.             $this->exceptionHandler = null;
  2.         }
  4.         try {
  5.             if (null !== $exceptionHandler) {
  6.                 $exceptionHandler($exception);
  8.                 return;
  9.             }
  10.             $handlerException ??= $exception;
  11.         } catch (\Throwable $handlerException) {
ErrorHandler->handleException()

ValueError

unlink(): Argument #1 ($filename) must not contain any null bytes

in /var/www/canadian/vendor/symfony/http-kernel/Profiler/FileProfilerStorage.php (line 341)
  2.             if ($csvTime >= $minimalProfileTimestamp) {
  3.                 break;
  4.             }
  6.             @unlink($this->getFilename($csvToken));
  7.             $offset += \strlen($line);
  8.         }
  9.         fclose($handle);
  11.         file_put_contents($file.'.offset', $offset);
in /var/www/canadian/vendor/symfony/http-kernel/Profiler/FileProfilerStorage.php unlink (line 341)
  2.             if ($csvTime >= $minimalProfileTimestamp) {
  3.                 break;
  4.             }
  6.             @unlink($this->getFilename($csvToken));
  7.             $offset += \strlen($line);
  8.         }
  9.         fclose($handle);
  11.         file_put_contents($file.'.offset', $offset);
in /var/www/canadian/vendor/symfony/http-kernel/Profiler/FileProfilerStorage.php -> removeExpiredProfiles (line 193)
  1.                 $profile->getVirtualType() ?? 'request',
  2.             ], ',', '"', '\\');
  3.             fclose($file);
  5.             if (1 === mt_rand(1, 10)) {
  6.                 $this->removeExpiredProfiles();
  7.             }
  8.         }
  10.         return true;
  11.     }
in /var/www/canadian/vendor/symfony/http-kernel/Profiler/Profiler.php -> write (line 97)
  1.             if ($collector instanceof LateDataCollectorInterface) {
  2.                 $collector->lateCollect();
  3.             }
  4.         }
  6.         if (!($ret = $this->storage->write($profile)) && null !== $this->logger) {
  7.             $this->logger->warning('Unable to store the profiler information.', ['configured_storage' => $this->storage::class]);
  8.         }
  10.         return $ret;
  11.     }
in /var/www/canadian/vendor/symfony/http-kernel/EventListener/ProfilerListener.php -> saveProfile (line 129)
  1.             }
  2.         }
  4.         // save profiles
  5.         foreach ($this->profiles as $request) {
  6.             $this->profiler->saveProfile($this->profiles[$request]);
  7.         }
  9.         $this->profiles = new \SplObjectStorage();
  10.         $this->parents = new \SplObjectStorage();
  11.     }
in /var/www/canadian/vendor/symfony/event-dispatcher/Debug/WrappedListener.php -> onKernelTerminate (line 115)
  1.         $this->priority ??= $dispatcher->getListenerPriority($eventName, $this->listener);
  3.         $e = $this->stopwatch->start($this->name, 'event_listener');
  5.         try {
  6.             ($this->optimizedListener ?? $this->listener)($event, $eventName, $dispatcher);
  7.         } finally {
  8.             if ($e->isStarted()) {
  9.                 $e->stop();
  10.             }
  11.         }
in /var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php -> __invoke (line 206)
  2.         foreach ($listeners as $listener) {
  3.             if ($stoppable && $event->isPropagationStopped()) {
  4.                 break;
  5.             }
  6.             $listener($event, $eventName, $this);
  7.         }
  8.     }
  10.     /**
  11.      * Sorts the internal list of listeners for the given event by priority.
in /var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php -> callListeners (line 56)
  1.         } else {
  2.             $listeners = $this->getListeners($eventName);
  3.         }
  5.         if ($listeners) {
  6.             $this->callListeners($listeners, $eventName, $event);
  7.         }
  9.         return $event;
  10.     }
in /var/www/canadian/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php -> dispatch (line 126)
  1.         try {
  2.             $this->beforeDispatch($eventName, $event);
  3.             try {
  4.                 $e = $this->stopwatch->start($eventName, 'section');
  5.                 try {
  6.                     $this->dispatcher->dispatch($event, $eventName);
  7.                 } finally {
  8.                     if ($e->isStarted()) {
  9.                         $e->stop();
  10.                     }
  11.                 }
in /var/www/canadian/vendor/symfony/http-kernel/HttpKernel.php -> dispatch (line 114)
  2.     public function terminate(Request $request, Response $response): void
  3.     {
  4.         try {
  5.             $this->terminating = true;
  6.             $this->dispatcher->dispatch(new TerminateEvent($this, $request, $response), KernelEvents::TERMINATE);
  7.         } finally {
  8.             $this->terminating = false;
  9.         }
  10.     }
in /var/www/canadian/vendor/symfony/http-kernel/Kernel.php -> terminate (line 145)
  1.         if (false === $this->booted) {
  2.             return;
  3.         }
  5.         if ($this->getHttpKernel() instanceof TerminableInterface) {
  6.             $this->getHttpKernel()->terminate($request, $response);
  7.         }
  8.     }
  10.     public function shutdown(): void
  11.     {
in /var/www/canadian/vendor/symfony/runtime/Runner/Symfony/HttpKernelRunner.php -> terminate (line 53)
  1.         } else {
  2.             $response->send();
  3.         }
  5.         if ($this->kernel instanceof TerminableInterface) {
  6.             $this->kernel->terminate($this->request, $response);
  7.         }
  9.         return 0;
  10.     }
  11. }
in /var/www/canadian/vendor/autoload_runtime.php -> run (line 29)
  1. $app = $app(...$args);
  3. exit(
  4.     $runtime
  5.         ->getRunner($app)
  6.         ->run()
  7. );
require_once('/var/www/canadian/vendor/autoload_runtime.php') in /var/www/canadian/public/index.php (line 5)
  1. <?php
  3. use App\Kernel;
  5. require_once dirname(__DIR__).'/vendor/autoload_runtime.php';
  7. return function (array $context) {
  8.     return new Kernel($context['APP_ENV'], (bool) $context['APP_DEBUG']);
  9. };

Stack Traces 2

[2/2] RuntimeException 
RuntimeException:
Failed to start the session because headers have already been sent by "/var/www/canadian/vendor/symfony/http-foundation/Response.php" at line 382.

  at /var/www/canadian/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php:116
  at Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->start()
     (/var/www/canadian/vendor/symfony/http-foundation/Session/Session.php:59)
  at Symfony\Component\HttpFoundation\Session\Session->start()
     (/var/www/canadian/src/EventListener/RequestListener.php:239)
  at App\EventListener\RequestListener->onKernelRequest()
     (/var/www/canadian/vendor/symfony/event-dispatcher/Debug/WrappedListener.php:115)
  at Symfony\Component\EventDispatcher\Debug\WrappedListener->__invoke()
     (/var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php:206)
  at Symfony\Component\EventDispatcher\EventDispatcher->callListeners()
     (/var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php:56)
  at Symfony\Component\EventDispatcher\EventDispatcher->dispatch()
     (/var/www/canadian/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php:126)
  at Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher->dispatch()
     (/var/www/canadian/vendor/symfony/http-kernel/HttpKernel.php:159)
  at Symfony\Component\HttpKernel\HttpKernel->handleRaw()
     (/var/www/canadian/vendor/symfony/http-kernel/HttpKernel.php:76)
  at Symfony\Component\HttpKernel\HttpKernel->handle()
     (/var/www/canadian/vendor/symfony/http-kernel/EventListener/ErrorListener.php:99)
  at Symfony\Component\HttpKernel\EventListener\ErrorListener->onKernelException()
     (/var/www/canadian/vendor/symfony/event-dispatcher/Debug/WrappedListener.php:115)
  at Symfony\Component\EventDispatcher\Debug\WrappedListener->__invoke()
     (/var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php:206)
  at Symfony\Component\EventDispatcher\EventDispatcher->callListeners()
     (/var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php:56)
  at Symfony\Component\EventDispatcher\EventDispatcher->dispatch()
     (/var/www/canadian/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php:126)
  at Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher->dispatch()
     (/var/www/canadian/vendor/symfony/http-kernel/HttpKernel.php:241)
  at Symfony\Component\HttpKernel\HttpKernel->handleThrowable()
     (/var/www/canadian/vendor/symfony/http-kernel/HttpKernel.php:134)
  at Symfony\Component\HttpKernel\HttpKernel->terminateWithException()
     (/var/www/canadian/vendor/symfony/http-kernel/EventListener/DebugHandlersListener.php:84)
  at Symfony\Component\HttpKernel\EventListener\DebugHandlersListener::Symfony\Component\HttpKernel\EventListener\{closure}()
     (/var/www/canadian/vendor/symfony/error-handler/ErrorHandler.php:538)
  at Symfony\Component\ErrorHandler\ErrorHandler->handleException()
[1/2] ValueError 
ValueError:
unlink(): Argument #1 ($filename) must not contain any null bytes

  at /var/www/canadian/vendor/symfony/http-kernel/Profiler/FileProfilerStorage.php:341
  at unlink()
     (/var/www/canadian/vendor/symfony/http-kernel/Profiler/FileProfilerStorage.php:341)
  at Symfony\Component\HttpKernel\Profiler\FileProfilerStorage->removeExpiredProfiles()
     (/var/www/canadian/vendor/symfony/http-kernel/Profiler/FileProfilerStorage.php:193)
  at Symfony\Component\HttpKernel\Profiler\FileProfilerStorage->write()
     (/var/www/canadian/vendor/symfony/http-kernel/Profiler/Profiler.php:97)
  at Symfony\Component\HttpKernel\Profiler\Profiler->saveProfile()
     (/var/www/canadian/vendor/symfony/http-kernel/EventListener/ProfilerListener.php:129)
  at Symfony\Component\HttpKernel\EventListener\ProfilerListener->onKernelTerminate()
     (/var/www/canadian/vendor/symfony/event-dispatcher/Debug/WrappedListener.php:115)
  at Symfony\Component\EventDispatcher\Debug\WrappedListener->__invoke()
     (/var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php:206)
  at Symfony\Component\EventDispatcher\EventDispatcher->callListeners()
     (/var/www/canadian/vendor/symfony/event-dispatcher/EventDispatcher.php:56)
  at Symfony\Component\EventDispatcher\EventDispatcher->dispatch()
     (/var/www/canadian/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php:126)
  at Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher->dispatch()
     (/var/www/canadian/vendor/symfony/http-kernel/HttpKernel.php:114)
  at Symfony\Component\HttpKernel\HttpKernel->terminate()
     (/var/www/canadian/vendor/symfony/http-kernel/Kernel.php:145)
  at Symfony\Component\HttpKernel\Kernel->terminate()
     (/var/www/canadian/vendor/symfony/runtime/Runner/Symfony/HttpKernelRunner.php:53)
  at Symfony\Component\Runtime\Runner\Symfony\HttpKernelRunner->run()
     (/var/www/canadian/vendor/autoload_runtime.php:29)
  at require_once('/var/www/canadian/vendor/autoload_runtime.php')
     (/var/www/canadian/public/index.php:5)