Fatal error: Uncaught exception 'RuntimeException' with message 'Failed to start the session: already started by PHP.' in /home/wwwroot/www.snnuu.cn/app/cache/prod/classes.php:97 Stack trace: #0 /home/wwwroot/www.snnuu.cn/app/cache/prod/classes.php(463): Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->start() #1 /home/wwwroot/www.snnuu.cn/vendor2/symfony/symfony/src/Symfony/Component/Form/Extension/Csrf/CsrfProvider/SessionCsrfProvider.php(54): Symfony\Component\HttpFoundation\Session\Session->start() #2 /home/wwwroot/www.snnuu.cn/vendor2/symfony/symfony/src/Symfony/Component/Form/Extension/Csrf/CsrfProvider/DefaultCsrfProvider.php(49): Symfony\Component\Form\Extension\Csrf\CsrfProvider\SessionCsrfProvider->getSessionId() #3 /home/wwwroot/www.snnuu.cn/vendor2/symfony/symfony/src/Symfony/Component/Form/FormRenderer.php(83): Symfony\Component\Form\Extension\Csrf\CsrfProvider\DefaultCsrfProvider->generateCsrfToken('site') #4 /home/wwwroot/www.snnuu.cn/vendor2/symfony/symfony/src/Symfony/Bridge/Twig/Ext in /home/wwwroot/www.snnuu.cn/app/cache/prod/classes.php on line 4562