mac下运行react-native run-ios 报错?

Question

mac下运行react-native run-ios 报错:

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

这个错误到底是怎么回事？为什么直到今天也没有一个确切的统一的解决方法？