执行podinstall报错failed: undefined method `map' for nil:NilClass

报错详情：

删除了很多输出内容
huanghaipo-2:ios  pod install
Analyzing dependencies

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### Command


/usr/local/bin/pod install


### Report

* What did you do?

* What did you expect to happen?

* What happened instead?


### Stack


   CocoaPods : 1.8.4
        Ruby : ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-darwin18]
    RubyGems : 3.0.6
        Host : Mac OS X 10.14.5 (18F132)
       Xcode : 11.3.1 (11C504)
         Git : git version 2.19.0
Ruby lib dir : /Users/huanghaipo/.rvm/rubies/ruby-2.6.3/lib
Repositories : HPSpecs - git - https://github.com/HuangHaiPo/HPSpecs.git @ 87ca8ef48b56269780abb0e14211ca1f2e121217
               HuModularizationSpecs - git - git@gitlab.317hu.com:HuModularizationLibrary/HuModularizationSpecs.git @ cd28555226d424e50e8e7454c3a8a5b287e4b9f2
               master - git - https://github.com/CocoaPods/Specs.git @ 061335ab06da5c1f542cdb56bc0d73f9af2d1984




### Podfile

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

# Uncomment this line to define a global platform for your project
 platform :ios, '9.0'


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Looking for related issues on cocoapods/cocoapods...
Searching for inspections failed: undefined method `map' for nil:NilClass

解决办法：

执行下方命令更新本地库,如果版本低在升级下cocoapods

pod repo update
升级
sudo gem update --system
sudo gem install cocoapods
pod setup