Blank new app shows error at Xcode


#1

Hi,

I create a blank new app without adding any plugin and tried running this app at Xcode. But come out with error:

duplicate symbol _NewBase64Encode in:
    /Users/sooweechai/Library/Developer/Xcode/DerivedData/Oco_App-emfqbsurijusrqefjsvtmpnxhoxv/Build/Intermediates/Oco App.build/Debug-iphonesimulator/Oco App.build/Objects-normal/x86_64/NSData+Base64-C5898CE84A993A88.o
    /Users/sooweechai/Library/Developer/Xcode/DerivedData/Oco_App-emfqbsurijusrqefjsvtmpnxhoxv/Build/Intermediates/Oco App.build/Debug-iphonesimulator/Oco App.build/Objects-normal/x86_64/NSData+Base64-CEEC3CBD8E4C5D5A.o
duplicate symbol _NewBase64Decode in:
    /Users/sooweechai/Library/Developer/Xcode/DerivedData/Oco_App-emfqbsurijusrqefjsvtmpnxhoxv/Build/Intermediates/Oco App.build/Debug-iphonesimulator/Oco App.build/Objects-normal/x86_64/NSData+Base64-C5898CE84A993A88.o
    /Users/sooweechai/Library/Developer/Xcode/DerivedData/Oco_App-emfqbsurijusrqefjsvtmpnxhoxv/Build/Intermediates/Oco App.build/Debug-iphonesimulator/Oco App.build/Objects-normal/x86_64/NSData+Base64-CEEC3CBD8E4C5D5A.o
ld: 2 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

2 duplicate symbols for architecture x86_64
Linker command failed with exit code 1 (use -v to see invocation)

Somebody help, have I missed some steps?
Thanks in advance.

My system information:

Xcode version: 8.2.1

global packages:

@ionic/cli-utils : 1.4.0
Cordova CLI      : 7.0.1 
Ionic CLI        : 3.4.0

local packages:

@ionic/app-scripts              : 1.3.7
@ionic/cli-plugin-cordova       : 1.4.0
@ionic/cli-plugin-ionic-angular : 1.3.1
Cordova Platforms               : ios 4.4.0
Ionic Framework                 : ionic-angular 3.3.0

System:

Node       : v8.0.0
OS         : OS X El Capitan
Xcode      : Xcode 8.2.1 Build version 8C1002 
ios-deploy : 1.9.1 
ios-sim    : 5.0.13 
npm        : 5.0.0