在專用窗格上執行lint命令時出錯「驗證期間遇到未知錯誤（無法將nil隱式轉換爲字符串）」。

Question

我創建依賴於另一個私有莢私人莢棉短絨效果很好，當我不添加任何依賴關係，而當我添加的依賴和運行lint命令它給我的錯誤

Encountered an unknown error (no implicit conversion of nil into String) during validation. 

的林特命令：

pod spec lint --private --sources=https://github.com/*****/****.git 

這是我的podSpec它有什麼問題，我應該怎麼做才能解決這個問題？

Pod::Spec.new do |s| 

s.name   = "****Framework" 
s.version  = "1.0.0" 
s.summary  = "Summary ................." 
s.homepage  = "https://github.com/****/****Framework" 
s.description = "Description ................." 
s.license  = "Simplified BSD license" 
s.author  = { "Nahla Mortada" => "nahla.mortada@****.com" } 
s.platform  = :ios, "9.0" 
s.ios.deployment_target = "9.0" 
s.source = { :git => "https://github.com/****/****Framework.git", :tag => s.version } 
s.source_files = "****Framework/*.swift" 
s.pod_target_xcconfig = { 
'SWIFT_VERSION' => '3.0', 
} 
s.requires_arc = true 
s.dependency '****' 

end 

完全錯誤：

ERROR | [iOS] unknown: Encountered an unknown error (no implicit conversion of nil into String 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.2.0/lib/cocoapods-core/specification.rb:531:in `initialize' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.2.0/lib/cocoapods-core/specification.rb:531:in `new' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.2.0/lib/cocoapods-core/specification.rb:531:in `from_file' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.2.0/lib/cocoapods-core/specification/set.rb:45:in `specification' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.2.0/lib/cocoapods-core/source.rb:265:in `search' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.2.0/lib/cocoapods-core/source/aggregate.rb:83:in `block in search' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.2.0/lib/cocoapods-core/source/aggregate.rb:83:in `select' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-core-1.2.0/lib/cocoapods-core/source/aggregate.rb:83:in `search' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/resolver.rb:347:in `create_set_from_sources' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/resolver.rb:317:in `find_cached_set' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/resolver.rb:290:in `specifications_for_dependency' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/resolver.rb:108:in `search_for' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/resolver.rb:206:in `block in sort_dependencies' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/resolver.rb:200:in `each' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/resolver.rb:200:in `sort_by' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/resolver.rb:200:in `sort_dependencies' 
/Library/Ruby/Gems/2.0.0/gems/molinillo-0.5.5/lib/molinillo/delegates/specification_provider.rb:52:in `block in sort_dependencies' 
/Library/Ruby/Gems/2.0.0/gems/molinillo-0.5.5/lib/molinillo/delegates/specification_provider.rb:69:in `with_no_such_dependency_error_handling' 
/Library/Ruby/Gems/2.0.0/gems/molinillo-0.5.5/lib/molinillo/delegates/specification_provider.rb:51:in `sort_dependencies' 
/Library/Ruby/Gems/2.0.0/gems/molinillo-0.5.5/lib/molinillo/resolution.rb:446:in `push_state_for_requirements' 
/Library/Ruby/Gems/2.0.0/gems/molinillo-0.5.5/lib/molinillo/resolution.rb:438:in `require_nested_dependencies_for' 
/Library/Ruby/Gems/2.0.0/gems/molinillo-0.5.5/lib/molinillo/resolution.rb:422:in `activate_spec' 
/Library/Ruby/Gems/2.0.0/gems/molinillo-0.5.5/lib/molinillo/resolution.rb:388:in `attempt_to_activate_new_spec' 
/Library/Ruby/Gems/2.0.0/gems/molinillo-0.5.5/lib/molinillo/resolution.rb:319:in `attempt_to_activate' 
/Library/Ruby/Gems/2.0.0/gems/molinillo-0.5.5/lib/molinillo/resolution.rb:137:in `process_topmost_state' 
/Library/Ruby/Gems/2.0.0/gems/molinillo-0.5.5/lib/molinillo/resolution.rb:78:in `resolve' 
/Library/Ruby/Gems/2.0.0/gems/molinillo-0.5.5/lib/molinillo/resolver.rb:42:in `resolve' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/resolver.rb:62:in `resolve' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/installer/analyzer.rb:719:in `block in resolve_dependencies' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/user_interface.rb:64:in `section' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/installer/analyzer.rb:717:in `resolve_dependencies' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/installer/analyzer.rb:76:in `analyze' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/installer.rb:236:in `analyze' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/installer.rb:150:in `block in resolve_dependencies' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/user_interface.rb:64:in `section' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/installer.rb:149:in `resolve_dependencies' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/validator.rb:405:in `block in download_pod' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/validator.rb:405:in `each' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/validator.rb:405:in `download_pod' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/validator.rb:301:in `block in perform_extensive_analysis' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/validator.rb:295:in `each' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/validator.rb:295:in `perform_extensive_analysis' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/validator.rb:79:in `validate' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/command/spec/lint.rb:64:in `block in run' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/command/spec/lint.rb:53:in `each' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/command/spec/lint.rb:53:in `run' 
/Library/Ruby/Gems/2.0.0/gems/claide-1.0.1/lib/claide/command.rb:334:in `run' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods/command.rb:52:in `run' 
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/bin/pod:55:in `<top (required)>' 
/usr/local/bin/pod:23:in `load' 
/usr/local/bin/pod:23:in `<main>' 
) during validation. 

Answer 1

嘗試通過運行rm -rf ~/.cocoapods，然後運行pod setup清除當地的CocoaPods緩存。

您的podspec似乎是有效的，如果這不能幫助您應該嘗試取消註釋您的s.dependency並再次linting它，因爲依賴性pod也可能是導致此崩潰的那個。