I upgraded Xcode as @nporter suggested but the issue remained.
Fortunately we found the issue in CocoaPods repository and the solution
fixed for us
too:https://github.com/CocoaPods/CocoaPods/issues/4370#issuecomment-183205691
Including the following line in our Podfile solved the warning and the
error no longer occurs:install! 'cocoapods', :deterministic_uuids =>
false Anyway, thanks for your time @nporter. I aprecciate your help.
Regards,Lucas.