UnexpectedValueException尝试安装laravelcollective时无法解析版本约束 [英] UnexpectedValueException Could not parse version constraint when trying to instal laravelcollective

问题描述

我是laravel的新手，我正在尝试安装 laravelcollective 。我只是在此处文档中使用，并且正在我的项目目录中使用它：

I am new to laravel and I am trying to install laravelcollective. I am just following to documentation here and I am using this from my project directory:

撰写者需要 laravelcollective / html： ^ 5.4.0

不幸的是，在我按下ent键后，立即出现以下错误：

Unfortunately, immediately after I press ented I get the following error :

[UnexpectedValueException]
无法解析版本约束：5.4.0：无效的版本字符串：5.4.0

[UnexpectedValueException] Could not parse version constraint :5.4.0: Invalid version string ":5.4.0"

我只是不知道如何解决此问题。我在Google上找不到很多东西，再加上缺乏对laravel的经验，这让我陷于困境。

I just don't know how to troubleshoot this. I didn't find much on google and this combined with my lack of experience with laravel leaves me stuck.

有人可以帮忙吗？

推荐答案

您可以在以下位置手动添加 composer.json ，然后使用 composer update 。

You can add it manually in composer.json then use composer update.

只需在<$ c $的行下添加 laravelcollective / html： 5.4。*， c> laravel / framework： 5.4。*，

Just add "laravelcollective/html": "5.4.*", under the row with "laravel/framework":"5.4.*",

就像这样：

"require": {
        "php": ">=7.0.0",
        "fideloper/proxy": "~3.3",
        "laravel/framework": "5.4.*",
        "laravelcollective/html": "5.4.*", <-- Add this row
        "laravel/tinker": "~1.0"
    },

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