I recently created a new project and copied resources from another project, But when i compiled, it generated one error, I checked twice resources are ok, but its showing Mach-O Linker error, I tried other answers, but nothing is working for me..
Ld /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Products/Debug-iphonesimulator/MyProject.app/MyProject normal x86_64
cd "/Users/iOSDEV/Developer/untitled folder/MyProject" export IPHONEOS_DEPLOYMENT_TARGET=8.3 export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator8.3.sdk -L/Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Products/Debug-iphonesimulator -F/Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Products/Debug-iphonesimulator -F/Users/iOSDEV/Developer/untitled\ folder/MyProject -filelist /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MyProject.LinkFileList -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -objc_abi_version -Xlinker 2 -fobjc-arc -fobjc-link-runtime -Xlinker -no_implicit_dylibs -mios-simulator-version-min=8.3 -framework Accounts -framework JudoPay -framework QuartzCore -framework Foundation -framework MobileCoreServices -framework Security -framework CoreTelephony -framework UIKit -Xlinker -dependency_info -Xlinker /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MyProject_dependency_info.dat -o /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Products/Debug-iphonesimulator/MyProject.app/MyProject
duplicate symbol _delegate in:
/Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MenuViewController.o /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/PlaceOrderViewController-B3C1DC5507CD786B.oduplicate symbol _delegate in:
/Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MenuViewController.o /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/LeftSideViewController.oduplicate symbol _delegate in:
/Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MenuViewController.o /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/ReOrderViewController.oduplicate symbol _delegate in:
/Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MenuViewController.o /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/AddToCart.oduplicate symbol _delegate in:
/Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MenuViewController.o /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MyOrdersViewController.oduplicate symbol _delegate in:
/Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MenuViewController.o /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/Cart.oduplicate symbol _delegate in:
/Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MenuViewController.o /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MenuDetailViewController.oduplicate symbol _delegate in:
/Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/MenuViewController.o /Users/iOSDEV/Library/Developer/Xcode/DerivedData/Build/Intermediates/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/x86_64/ProductDetailViewController-86CA1752309DD871.old: 8 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
