自上次成功安装以来，pod文件相同，但我在“ pod安装”中始终收到此错误！我几天来一直遇到这个问题。
NoMethodError-未定义的方法framework?' for nil:NilClass
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/target.rb:112:in build_as_framework？”/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer/xcode/target_validator.rb:53:inblock (3 levels) in verify_no_duplicate_framework_and_library_names'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer/xcode/target_validator.rb:53:inselect'/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer/xcode/target_validator.rb:53:inblock (2 levels) in verify_no_duplicate_framework_and_library_names'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer/xcode/target_validator.rb:48:ineach_key'/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer/xcode/target_validator.rb:48:inblock in verify_no_duplicate_framework_and_library_names'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer/xcode/target_validator.rb:47:ineach'/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer/xcode/target_validator.rb:47:inverify_no_duplicate_framework_and_library_names'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer/xcode/target_validator.rb:37:invalidate！'/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer.rb:590：在validate_targets'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/installer.rb:158:in安装中！”/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/command/install.rb:52:inrun'
/Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:334:inrun'/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/lib/cocoapods/command.rb:52:in run'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.1/bin/pod:55:in'/ usr / local / bin / pod：23：in load'
/usr/local/bin/pod:23:in'
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[!] Oh no, an error occurred.
尝试pod update
如果不起作用，请尝试以下步骤
希望可以解决您的问题