在使用composer命令：composer require laravel/socialite進行安裝發生錯誤。
版本：laravel5.6
出現錯誤：```php
Your requirements could not be resolved to an installable set of packages.
Problem 1
- laravel/socialite[v5.2.0, ..., 5.x-dev] require illuminate/http ^6.0|^7.0|^8.0 -> found illuminate/http[v6.0.0, ..., 6.x-dev, v7.0.0, ..., 7.x-dev, v8.0.0, ..., 8.x-dev] but these were not loaded, likely because it conflicts with another require.
- Root composer.json requires laravel/socialite ^5.2 -> satisfiable by laravel/socialite[v5.2.0, v5.2.1, 5.x-dev].
Installation failed, reverting ./composer.json and ./composer.lock to their original content.```
錯誤原因：laravel/socialite[v5.2.0, …, 5.x-dev]依賴的版本要laravel6.0以上，導致安裝失敗。
解決方法：更新laravel版本或者安裝低版本的socialite
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