我是新手，运行demo的时候，react-native run-ios报错：
** BUILD FAILED **

The following build commands failed:
CompileC /Users/l/RN/demo/RNWeChat/ios/build/Build/Intermediates/RNNeteaseIm.build/Debug-iphonesimulator/RNNeteaseIm.build/Objects-normal/x86_64/NTESSpellingCenter.o RNNeteaseIm/Util/Spelling/NTESSpellingCenter.m normal x86_64 objective-c com.apple.compilers.llvm.clang.1_0.compiler
CompileC /Users/l/RN/demo/RNWeChat/ios/build/Build/Intermediates/RNNeteaseIm.build/Debug-iphonesimulator/RNNeteaseIm.build/Objects-normal/x86_64/NIMKitUtil.o RNNeteaseIm/Util/NIMKitUtil.m normal x86_64 objective-c com.apple.compilers.llvm.clang.1_0.compiler
(2 failures)

Installing build/Build/Products/Debug-iphonesimulator/TestReactNavigation.app
An error was encountered processing the command (domain=NSPOSIXErrorDomain, code=2):
Failed to install the requested application
An application bundle was not found at the provided path.
Provide a valid path to the desired application bundle.
Print: Entry, ":CFBundleIdentifier", Does Not Exist

Command failed: /usr/libexec/PlistBuddy -c Print:CFBundleIdentifier build/Build/Products/Debug-iphonesimulator/TestReactNavigation.app/Info.plist
Print: Entry, ":CFBundleIdentifier", Does Not Exist