Symfony 4:类类型参数的默认值只能是 [英] Symfony 4 : Default value for parameters with a class type can only be

问题描述

我目前正在 symfony 4 中开发一个应用程序.我遇到了在 prod 中部署的问题.当我到达导航器时，出现此错误:

I am currently working on an application in symfony 4. I encounter a problem for deploy in prod. when I get to the navigator I get this error :

致命错误:在第 40 行的/var/www/html/project/vendor/symfony/config/ResourceCheckerConfigCache.php 中，具有类类型的参数的默认值只能为 NULL.

Fatal error: Default value for parameters with a class type can only be NULL in /var/www/html/project/vendor/symfony/config/ResourceCheckerConfigCache.php on line 40.

public function __construct(string $file, iterable $resourceCheckers = array())
{
    $this->file = $file;
    $this->resourceCheckers = $resourceCheckers;
}

我指定该站点与开发服务器完美配合(php bin/console server:start)

I specify that the site works perfectly with the dev server (php bin /console server:start)

问题一定来自环境.在 .env 文件中，当我设置 APP_ENV=dev 时，浏览器中只有一个状态为 500 的空白页面(日志中没有消息)

The problem must come from the environment. in the .env file, when I set APP_ENV=dev , in the browser there is only a blank page with a status 500 (no message in the logs)

我在互联网上找不到任何文档，我开始缺乏想法.如果有人有解决方案，我很感兴趣.

I can not find any documentation on the internet and I am starting to lack ideas. If someone has a solution I am interested.

谢谢.

推荐答案

OP 的解决方案.

问题是 PHP 版本是 PHP 7.0 而不是 7.1.尽管在我的 shell 中，php -v 命令在 7.1 中很好，但我注意到 phpinfo ();

The problem was that the PHP version was PHP 7.0 and not 7.1. Though in my shell the php -v command was fine with 7.1, I noticed the wrong version used by phpinfo ();

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