Net::OpenTimeout - execution expired

[Ade0408]

When I use pod install to install pod to my project, I get the following error:

Net::OpenTimeout - execution expired
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/net/http.rb:880:in `initialize'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/net/http.rb:880:in `open'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/net/http.rb:880:in `block in connect'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/timeout.rb:101:in `timeout'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/net/http.rb:878:in `connect'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/net/http.rb:863:in `do_start'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/net/http.rb:852:in `start'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/open-uri.rb:319:in `open_http'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/open-uri.rb:737:in `buffer_open'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/open-uri.rb:212:in `block in open_loop'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/open-uri.rb:210:in `catch'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/open-uri.rb:210:in `open_loop'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/open-uri.rb:151:in `open_uri'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/open-uri.rb:717:in `open'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/open-uri.rb:35:in `open'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/external_sources/podspec_source.rb:19:in `block in fetch'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/user_interface.rb:85:in `titled_section'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/external_sources/podspec_source.rb:11:in `fetch'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/installer/analyzer.rb:685:in `fetch_external_source'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/installer/analyzer.rb:661:in `block (2 levels) in fetch_external_sources'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/installer/analyzer.rb:660:in `each'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/installer/analyzer.rb:660:in `block in fetch_external_sources'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/user_interface.rb:64:in `section'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/installer/analyzer.rb:659:in `fetch_external_sources'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/installer/analyzer.rb:82:in `analyze'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/installer.rb:243:in `analyze'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/installer.rb:154:in `block in resolve_dependencies'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/user_interface.rb:64:in `section'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/installer.rb:153:in `resolve_dependencies'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/installer.rb:116:in `install!'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/command/install.rb:41:in `run'
/Library/Ruby/Gems/2.3.0/gems/claide-1.0.2/lib/claide/command.rb:334:in `run'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/lib/cocoapods/command.rb:52:in `run'
/Library/Ruby/Gems/2.3.0/gems/cocoapods-1.4.0/bin/pod:55:in `<top (required)>'
/usr/local/bin/pod:22:in `load'
/usr/local/bin/pod:22:in `<main>'

What are you willing to cause?