即使在尝试 sudo gem install cocoapods -n /usr/local/bin 之后也只安装了单个 Gem 并且在使用命令 pod --version 之后输出如下：
Traceback（最近一次通话最后）：37：来自/usr/local/bin/pod:23:in <main>' 36: from /usr/local/bin/pod:23:in load' 35：来自/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.0/bin/pod :36:in <top (required)>' 34: from /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in require' 33: 来自 /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in require' 32: from /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.0/lib/cocoapods.rb:17:in <top (required)>' 31: 来自 /Library/Ruby/Gems/2.6。 0/gems/cocoapods-1.10.0/lib/cocoapods.rb:77:in <module:Pod>' 30: from /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in require' 29: 来自 /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in require' 28: from /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.0/lib/cocoapods/core_overrides.rb:1:in <top (必需)>'27：来自/Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:inrequire' 26: from /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in 要求'25：来自/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10。 0/lib/cocoapods/sources_manager.rb:7:in <top (required)>' 24: from /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.0/lib/cocoapods/sources_manager.rb:185:in module:Pod' 23: 来自 /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:inrequire' 22: from /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in 需要'21：来自/Library/Ruby/Gems/2.6.0/gems/cocoapods-core-1.10.0/lib/cocoapods-core/trunk_source.rb:1:in <top (required)>' 20: from /Library/Ruby/Gems/2.6.0/gems/cocoapods-core-1.10.0/lib/cocoapods-core/trunk_source.rb:2:in module:Pod' 19：来自/Library/Ruby /Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:inrequire' 18: from /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in 要求'17：来自/Library/Ruby/Gems/2.6.0/gems/cocoapods-core-1.10.0/lib/cocoapods-core/ cdn_source.rb:3:in <top (required)>' 16: from /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in require' 15: 来自 /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in require' 14: from /Library/Ruby/Gems/2.6.0/gems/concurrent-ruby-1.1.7/lib/concurrent-ruby/concurrent.rb:7:in <top (required)>' 13: 来自 /Library/Ruby/Site /2.6.0/rubygems/core_ext/kernel_require.rb:92:inrequire' 12: from /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in 要求'11：来自/Library/Ruby/Gems/2.6.0/gems/concurrent-ruby-1.1.7/lib/concurrent-ruby/concurrent/ executors.rb:20:in<top (required)>' 10: from /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in 要求' 9: 来自 /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:inrequire' 8: from /Library/Ruby/Gems/2.6.0/gems/concurrent-ruby-1.1.7/lib/concurrent-ruby/concurrent/executor/timer_set.rb:1:in <顶部（必需）>' 7：来自 /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:inrequire' 6: from /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in 要求' 5：来自 /Library/Ruby/Gems/2.6.0/gems/ concurrent-ruby-1.1.7/lib/concurrent-ruby/concurrent/scheduled_task.rb:4:in<top (required)>' 4: from /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in 要求'3：来自/Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in require' 2: from /Library/Ruby/Gems/2.6.0/gems/concurrent-ruby-1.1.7/lib/concurrent-ruby/concurrent/ivar.rb:3:in <top (required)>' 1: from /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in require' /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:92:in require': 无法加载此类文件 -- concurrent/collection/copy_on_write_observer_set (LoadError)