I cant open my source code. What does this mean?
Ld /Users/macbook/Library/Developer/Xcode/DerivedData/MusicPlayer-ehjweqhwaruxzldbejtydqozahxx/Build/Products/Debug-iphonesimulator/OneSignalNotificationServiceExtension.appex/OneSignalNotificationServiceExtension normal x86_64 (in target: OneSignalNotificationServiceExtension)
cd /Users/macbook/Downloads/MusicPlayer-3
export IPHONEOS_DEPLOYMENT_TARGET=12.2
/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/iPhoneSimulator12.2.sdk -L/Users/macbook/Library/Developer/Xcode/DerivedData/MusicPlayer-ehjweqhwaruxzldbejtydqozahxx/Build/Products/Debug-iphonesimulator -F/Users/macbook/Library/Developer/Xcode/DerivedData/MusicPlayer-ehjweqhwaruxzldbejtydqozahxx/Build/Products/Debug-iphonesimulator -F/Users/macbook/Downloads/MusicPlayer-3/Pods/OneSignal/iOS_SDK/OneSignalSDK/Framework -filelist /Users/macbook/Library/Developer/Xcode/DerivedData/MusicPlayer-ehjweqhwaruxzldbejtydqozahxx/Build/Intermediates.noindex/MusicPlayer.build/Debug-iphonesimulator/OneSignalNotificationServiceExtension.build/Objects-normal/x86_64/OneSignalNotificationServiceExtension.LinkFileList -Xlinker -rpath -Xlinker /usr/lib/swift -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -Xlinker -rpath -Xlinker @executable_path/../../Frameworks -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @executable_path/../../Frameworks -mios-simulator-version-min=12.2 -dead_strip -Xlinker -object_path_lto -Xlinker /Users/macbook/Library/Developer/Xcode/DerivedData/MusicPlayer-ehjweqhwaruxzldbejtydqozahxx/Build/Intermediates.noindex/MusicPlayer.build/Debug-iphonesimulator/OneSignalNotificationServiceExtension.build/Objects-normal/x86_64/OneSignalNotificationServiceExtension_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -Xlinker -objc_abi_version -Xlinker 2 -fapplication-extension -fobjc-link-runtime -L/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator -Xlinker -add_ast_path -Xlinker /Users/macbook/Library/Developer/Xcode/DerivedData/MusicPlayer-ehjweqhwaruxzldbejtydqozahxx/Build/Intermediates.noindex/MusicPlayer.build/Debug-iphonesimulator/OneSignalNotificationServiceExtension.build/Objects-normal/x86_64/OneSignalNotificationServiceExtension.swiftmodule -ObjC -framework OneSignal -framework SystemConfiguration -framework UIKit -framework UserNotifications -e _NSExtensionMain -Xlinker -sectcreate -Xlinker __TEXT -Xlinker __entitlements -Xlinker /Users/macbook/Library/Developer/Xcode/DerivedData/MusicPlayer-ehjweqhwaruxzldbejtydqozahxx/Build/Intermediates.noindex/MusicPlayer.build/Debug-iphonesimulator/OneSignalNotificationServiceExtension.build/OneSignalNotificationServiceExtension.appex-Simulated.xcent -framework Pods_OneSignalNotificationServiceExtension -Xlinker -dependency_info -Xlinker /Users/macbook/Library/Developer/Xcode/DerivedData/MusicPlayer-ehjweqhwaruxzldbejtydqozahxx/Build/Intermediates.noindex/MusicPlayer.build/Debug-iphonesimulator/OneSignalNotificationServiceExtension.build/Objects-normal/x86_64/OneSignalNotificationServiceExtension_dependency_info.dat -o /Users/macbook/Library/Developer/Xcode/DerivedData/MusicPlayer-ehjweqhwaruxzldbejtydqozahxx/Build/Products/Debug-iphonesimulator/OneSignalNotificationServiceExtension.appex/OneSignalNotificationServiceExtension
ld: framework not found Pods_OneSignalNotificationServiceExtension
clang: error: linker command failed with exit code 1 (use -v to see invocation)