After upgrading to Xcode 15.3
Xcode 15.3 - React Native Flipper error
This should be fixed with a newer version in Flipper https://github.com/facebook/flipper/commit/b3dcdb87f930dbbc9dbacb53ad60996e0111e7d8
The FlipperTransportTypes didn't yet include functional header and as of Xcode 15.3 toolchain <string> header did not transitively include it anymore.
I am getting the same error