JSON::ParserError - 767: unexpected token at

很久没有更新Cocoapods了，最近更新出现了下诉问题

Updating local specs repositories
Adding spec repo `trunk` with CDN `https://cdn.cocoapods.org/`
Analyzing dependencies
...![cocoapodsError.png](https://upload-images.jianshu.io/upload_images/3248106-f6d85421dc49854c.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
...
### Error

...
JSON::ParserError - 767: unexpected token at ''
......

cocoapodsError.png

解决办法：
1.pod repo list 查看一下源列表，检测是否有2 repos

pod repo list

image.png

2.移除trunk源

pod repo remove trunk

image.png

3.修改Podfile，添加

source 'https://github.com/CocoaPods/Specs.git'

image.png

4.重新更新

Pod update

image.png