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md Don't forget to anonymize any private data! <code class="objectivec">解決問題方法：</code>
terminal 終端進行pod install 時出現這種問題 。根據error 內容基本可以判定是cocoapods版本或者ruby版本問題導致的。
所以只要降低或者升級最新版本即可解決。
命令行如下
pod repo remove master
pod repo add master https://github.com/CocoaPods/Specs.git
pod repo update
如果還不能解決：嘗試卸載當前pod版本，然后降低版本 （我用1.5.0成功）
sudo gem uninstall cocoapods
sudo gem install cocoapods -v 1.5.0