Error on ionic v1, AngularJS - IOS -- Linker command failed with exit code 1

Hi im modifying an app that is developed in ionic v1, angularjs.
Android perfecto but, when i try to upload the app for iOS to the appStore i receive a lot of errors, can anyone help me please!!

I got this error when i used OneSignal API involving cocoapods.
Fixed it by

 sudo gem install cocoapods
  pod repo update

Hello man, thanks for your answer but, that command, updated the code to the latest ios version but the problem is still showing :frowning:

the solution for me was to open the .xcworkspace file insted of .xcodeproj located inside my ‘/platforms/ios’ folder.

Did you ever figure this one out? I am running into the same issue.