Question

我正在尝试在现有项目中使用新的（Windows 8）笔记本电脑工作，该项目在我之前的（Mac OS X）计算机以及部署到的所有（Linux）服务器中都能正常工作。

我从git克隆，运行作曲家，app / console工作正常，我已正确设置配置文件，创建数据库并检查数据库架构是否正常，清除缓存等等，因为我已经之前做了一千次。

但是现在我收到了一个我以前从未遇到的错误，我不知道它是否与更新的依赖关系有关，这些依赖关系可能不一定使用与以前完全相同的版本，或者只是我自己在Windows环境中的新工作：

[1] RuntimeException: Failed to start the session because headers have already been sent by "" at line 0.
at n/a
    in C:\Users\David\Sites\my-project\app\cache\dev\classes.php line 103

at Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->start()
    in C:\Users\David\Sites\my-project\app\cache\dev\classes.php line 183

at Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->getBag('attributes')
    in C:\Users\David\Sites\my-project\app\cache\dev\classes.php line 475

at Symfony\Component\HttpFoundation\Session\Session->has('_security.last_error')
    in C:\Users\David\Sites\my-project\vendor\friendsofsymfony\user-bundle\FOS\UserBundle\Controller\SecurityController.php line 28

at FOS\UserBundle\Controller\SecurityController->loginAction(object(Request))
    in  line 

at call_user_func_array(array(object(SecurityController), 'loginAction'), array(object(Request)))
    in C:\Users\David\Sites\my-project\app\bootstrap.php.cache line 2841

at Symfony\Component\HttpKernel\HttpKernel->handleRaw(object(Request), '1')
    in C:\Users\David\Sites\my-project\app\bootstrap.php.cache line 2815

at Symfony\Component\HttpKernel\HttpKernel->handle(object(Request), '1', true)
    in C:\Users\David\Sites\my-project\app\bootstrap.php.cache line 2944

at Symfony\Component\HttpKernel\DependencyInjection\ContainerAwareHttpKernel->handle(object(Request), '1', true)
    in C:\Users\David\Sites\my-project\app\bootstrap.php.cache line 2245

at Symfony\Component\HttpKernel\Kernel->handle(object(Request))
    in C:\Users\David\Sites\my-project\web\app_dev.php line 29

Answer 1

检查是否有任何自定义类覆盖HttpKernel中的类，例如Bundle类没有从boot()

之类的方法发送标题或响应

无法启动会话，因为标题已经由“”在第0行的n / a处发送

1 个答案: