Issue with concurrent-ruby
Using Xcode 10.2: Requires CocoaPods 1.7.3 or above.
Run pod install
pod install normally
Concurrent::Promises is not found
update concurrent-ruby first!
gem install concurrent-ruby or gem update concurrent-ruby.
Closing! thanks people can seek this issue for solution.
Most helpful comment
gem install concurrent-rubyorgem update concurrent-ruby.Closing! thanks people can seek this issue for solution.