Amazon FreeRTOS on sifive learn inventor

HI,I download example from https://github.com/sifive/Amazon-FreeRTOSbut I can’t built successfully aws_demo and aws_test projects by Freedom Studio on Win.
the error message is following:
fatal error: metal/drivers/sifive_local-external-interrupts0.h: No such file or directory
Does anyone have the same problem as me?
The file is directly decompressed without modification.

problem solved.dont’t use zip file from github
it says:
This repo uses Git Submodules to bring in dependent components.
Note: If you download the ZIP file provided by GitHub UI, you will not get the contents of the submodules. (The ZIP file is also not a valid git repository)