Build Failed : <React/RCTBridgeModule.h> is not found.

[cppiod]

When I build the demo project in Xcode, it reported <React/RCTBridgeModule.h> is not found.
I updated react-native and React to 0.42.0 and 15.4.1, but still got the error. Then I changed RCTWebChat.xcodeproj → Build Settings → Search Paths → Header Search Paths to
$(SRCROOT)/../../react-native/React and
$(SRCROOT)/../../react-native/Libraries

But it doesn't work. Anyone knows how to fix this problem? Many thanks.

[cppiod]

After searching a lot of similar questions, I found an solution that works:
facebook/react-native#11721

• In Xcode, go to the project scheme (Product -> Scheme -> Manage Scheme -> double click your project).
• Click on the 'Build' option at the left pane.
• Uncheck 'Parallelize Build' under Build Options.
• Build core React - In scheme list (Project->Scheme) select React as the scheme in Xcode and build it (cmd+B)
• Clean (cmd+shift+K) the project and build.