problem on installation

[AndreaMiotto]

Downloading dependencies -> Installing Flutter (1.0.0) -> Installing vibrate (0.0.1)

• Running pre install hooks [!] Unable to determine Swift version for the following pods:
  • vibrate does not specify a Swift version and none of the targets (Runner) integrating it have the SWIFT_VERSION attribute set. Please contact the author or set the SWIFT_VERSION attribute in at least one of the targets that integrate this pod. /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.0/lib/cocoapods/installer/xcode/target_validator.rb:115:in verify_swift_pods_swift_version' /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.0/lib/cocoapods/installer/xcode/target_validator.rb:37:invalidate!' /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.0/lib/cocoapods/installer.rb:459:in validate_targets' /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.0/lib/cocoapods/installer.rb:138:ininstall!' /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.0/lib/cocoapods/command/install.rb:48:in run' /Library/Ruby/Gems/2.3.0/gems/claide-1.0.2/lib/claide/command.rb:334:inrun' /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.0/lib/cocoapods/command.rb:52:in run' /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.0/bin/pod:55:in<top (required)>' /usr/local/bin/pod:22:in load' /usr/local/bin/pod:22:in
    ' Error running pod install Exited (sigterm)

[AndreaMiotto]

It was a project configuration problem. It was not supporting swift. I've delete android and ios folder, than i've used the command:

flutter create -i swift -a kotlin projectName

And now it works.