title: Running Ionic 3 app on iPhone throws error: 2 duplicate symbols for architecture arm64
body: <p>I am opening <code>.xcworkspace</code> of my Ionic 3 project and trying to run it on my device but I suddenly get the following error in Xcode:</p>
  
  <pre><code>Ld /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Products/Debug-iphoneos/MyApp.app/MyApp normal arm64
      cd /Users/manuel/Documents/MyApp/dev/copernic4-ion2/galilei/platforms/ios
      export IPHONEOS_DEPLOYMENT_TARGET=9.0
      export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
      /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.3.sdk -L/Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Products/Debug-iphoneos -L/Users/manuel/Documents/MyApp/dev/copernic4-ion2/galilei/platforms/ios/MyApp/Plugins/cordova-plugin-google-analytics -F/Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Products/Debug-iphoneos -F/Users/manuel/Documents/MyApp/dev/copernic4-ion2/galilei/platforms/ios/Pods/OneSignal/iOS_SDK/OneSignalSDK/Framework -FMyApp/Plugins/com.googlemaps.ios -filelist /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Intermediates/MyApp.build/Debug-iphoneos/MyApp.build/Objects-normal/arm64/MyApp.LinkFileList -Xlinker -rpath -Xlinker @executable_path/Frameworks -miphoneos-version-min=9.0 -dead_strip -Xlinker -object_path_lto -Xlinker /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Intermediates/MyApp.build/Debug-iphoneos/MyApp.build/Objects-normal/arm64/MyApp_lto.o -Xlinker -no_deduplicate -fobjc-arc -fobjc-link-runtime -ObjC -ObjC -framework OneSignal -framework SystemConfiguration -framework UIKit -framework UserNotifications /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Products/Debug-iphoneos/libCordova.a -framework Accelerate -framework CoreData -framework CoreLocation -framework CoreText -framework GLKit -framework ImageIO -lc++ -lz -framework OpenGLES -framework QuartzCore -framework SystemConfiguration -framework UIKit -framework GoogleMapsBase -framework GoogleMaps -framework GoogleMapsCore -framework EventKit -framework EventKitUI -framework AVFoundation -lGoogleAnalyticsServices -lAdIdAccess -framework AdSupport -lsqlite3 -weak_framework WebKit -lz -Xlinker -dependency_info -Xlinker /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Intermediates/MyApp.build/Debug-iphoneos/MyApp.build/Objects-normal/arm64/MyApp_dependency_info.dat -o /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Products/Debug-iphoneos/MyApp.app/MyApp
  
  duplicate symbol _OBJC_CLASS_$_CDVLogger in:
      /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Intermediates/MyApp.build/Debug-iphoneos/MyApp.build/Objects-normal/arm64/CDVLogger.o
      /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Products/Debug-iphoneos/libCordova.a(CDVLogger.o)
  duplicate symbol _OBJC_METACLASS_$_CDVLogger in:
      /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Intermediates/MyApp.build/Debug-iphoneos/MyApp.build/Objects-normal/arm64/CDVLogger.o
      /Users/manuel/Library/Developer/Xcode/DerivedData/MyApp-awaxbzztsgokklgptpuoufwcwmkt/Build/Products/Debug-iphoneos/libCordova.a(CDVLogger.o)
  ld: 2 duplicate symbols for architecture arm64
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>I don't understand what is duplicated... any help would be really appreciated.</p>