作曲家错误[UnexpectedValueException] [英] Composer error [UnexpectedValueException]

问题描述

我尝试安装composer并收到以下错误。有人知道这是什么意思吗？

I tried composer install and got the following error. Anyone know what it means?

[UnexpectedValueException]

无法解析版本约束所需：无效的版本字符串
需要

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

安装[--prefer-source] [--prefer-dist] [--dry-run] [--dev]
[--no-dev] [--no-plugins] [--no-custom-installers] [--no-autoloader]
[--no-scripts] [--no-progress] [ -v | vv | vvv | --verbose]
[-o | --optimize-autoloader] [-a | --classmap-authoritative]
[--ignore-platform-reqs] [- -] [] ...

install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-plugins] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--ignore-platform-reqs] [--] []...

我所有的composer.json都在其中：

All my composer.json has in it is this:

{
  "require" : {
    "facebook/php-sdk-v4" : "4.0.*",
    "league/oauth2-client": "Needed for Gmail's XOAUTH2 authentication system"
  }
}

推荐答案

无法解析版本约束所需：无效的版本字符串
需要

Could not parse version constraint Needed: Invalid version string "Needed"

您需要一个包裹版本号而不是字符串 Gmail的XOAUTH2身份验证系统需要。

You need a package version number and not the string 'Needed for Gmail's XOAUTH2 authentication system'.

例如：

{
  "require" : {
    "facebook/php-sdk-v4" : "4.0.*",
    "league/oauth2-client": "1.1.0"
  }
}

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