鏈接器命令失敗錯誤，xcode？

我在模擬器上運行我的應用程序，它工作正常，並啓動。鏈接器命令失敗錯誤，xcode？

但是，當我連接iPhone設備並運行該項目時，我得到以下錯誤。

我不明白這是什麼意思

 Ld /Users/anilkumar/Library/Developer/Xcode/DerivedData/Colgate_Oral_Care_Centre- gnpyidirhzoloxbfrpksaeqeowve/Build/Products/Debug-iphoneos/ColTests.xctest/ColTests normal armv7 
cd /Users/anilkumar/Desktop/Col 
export IPHONEOS_DEPLOYMENT_TARGET=8.0 
export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.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 armv7 -bundle -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.0.sdk -L/Users/anilkumar/Library/Developer/Xcode/DerivedData/Colgate_Oral_Care_Centre-gnpyidirhzoloxbfrpksaeqeowve/Build/Products/Debug-iphoneos -F/Users/anilkumar/Library/Developer/Xcode/DerivedData/Colgate_Oral_Care_Centre-gnpyidirhzoloxbfrpksaeqeowve/Build/Products/Debug-iphoneos -F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.0.sdk/Developer/Library/Frameworks -F/Applications/Xcode.app/Contents/Developer/Library/Frameworks -F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.0.sdk/Developer/Library/Frameworks -filelist /Users/anilkumar/Library/Developer/Xcode/DerivedData/Colgate_Oral_Care_Centre-gnpyidirhzoloxbfrpksaeqeowve/Build/Intermediates/Colgate\ Oral\ Care\ Centre.build/Debug-iphoneos/ColTests.build/Objects-normal/armv7/ColTests.LinkFileList -dead_strip -bundle_loader /Users/anilkumar/Library/Developer/Xcode/DerivedData/Colgate_Oral_Care_Centre-gnpyidirhzoloxbfrpksaeqeowve/Build/Products/Debug-iphoneos/Col.app/Col -framework XCTest -fobjc-arc -fobjc-link-runtime -miphoneos-version-min=8.0 -framework XCTest -framework UIKit -framework Foundation -Xlinker -dependency_info -Xlinker /Users/anilkumar/Library/Developer/Xcode/DerivedData/Colgate_Oral_Care_Centre-gnpyidirhzoloxbfrpksaeqeowve/Build/Intermediates/Colgate\ Oral\ Care\ Centre.build/Debug-iphoneos/ColTests.build/Objects-normal/armv7/ColTests_dependency_info.dat -o /Users/anilkumar/Library/Developer/Xcode/DerivedData/Colgate_Oral_Care_Centre-gnpyidirhzoloxbfrpksaeqeowve/Build/Products/Debug-iphoneos/ColTests.xctest/ColTests 

ld: file not found: /Users/anilkumar/Library/Developer/Xcode/DerivedData/Colgate_Oral_Care_Centre-gnpyidirhzoloxbfrpksaeqeowve/Build/Products/Debug-iphoneos/Col.app/Col 
    clang: error: linker command failed with exit code 1 (use -v to see invocation)

enter image description here