Php “当”时我该怎么办；安装失败，将./composer.json还原为其原始内容；当试图通过composer在laravel上安装点火开关时？

我正试图通过composer在laravel安装点火装置

composer require --dev facade/ignition

但它一直给我这个错误信息：

Using version ^1.6 for facade/ignition
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for facade/ignition ^1.6 -> satisfiable by facade/ignition[1.6.0].
    - Conclusion: don't install filp/whoops 2.5.0
    - Can only install one of: filp/whoops[2.4.0, 2.1.13].
    - Can only install one of: filp/whoops[2.4.0, 2.1.13].
    - Can only install one of: filp/whoops[2.4.0, 2.1.13].
    - facade/ignition 1.6.0 requires filp/whoops ^2.4 -> satisfiable by filp/whoops[2.4.0, 2.4.1, 2.5.0].
    - Conclusion: don't install filp/whoops 2.4.1
    - Installation request for filp/whoops (locked at 2.1.13, required as ~2.0) -> satisfiable by filp/whoops[2.1.13].


Installation failed, reverting ./composer.json to its original content.

---

您不能在同一个Laravel应用程序上同时安装filp/whoops 2.5.0和facade/ignition 1.0-dev，因为ignition需要版本^2.4的whoops，所以请删除手动安装的whoops版本，并让ignition按照包的

composer.json

中的定义为自己安装正确的版本

{
    "name": "facade/ignition",
    "homepage": "https://github.com/facade/ignition",
    "require": {
        "php": "^7.1",
        "filp/whoops": "^2.4" // Here
    },
}

移除filp\whoops像这样

composer删除filp/whoops

然后安装门面/点火开关

composer require--dev facade/ignition

尝试通过cli安装它

composer require facade/ignition

您确定吗？我相信点火装置需要发出呜呜声才能工作。我认为这可能更多的是因为要求的版本不兼容。是的，点火需要filp/whoops版本^2.4，OP正在安装2.5.0，删除whoops并让ignition将其作为依赖项安装是确保安装了正确版本的whoops的一种方法

--dev

标志表示仅在开发期间需要该包（例如，在测试期间使用mockry或phpunit）。这并不意味着“获取最新的开发版本”。有关更多信息，请参阅。