Missing ssl.gni file

[LordTrololo]

I am trying to build the owt webrtc on a Win10, Visual Studio 2019 machine.

However upon trying to generate the build files via:
C:\Git\owt_webrtc\src>gn gen out\Debug --args="is_debug=true rtc_use_h264=false target_os=\"win\" target_cpu=\"x64\"
I get the following error:

C:\Git\owt_webrtc\src>gn gen out\Debug --args="is_debug=true rtc_use_h264=false target_os=\"win\" target_cpu=\"x64\"
ERROR at //webrtc.gni:15:1: Can't load input file.
import("//build_overrides/ssl/ssl.gni")
^-------------------------------------
Unable to load:
  C:/Git/owt_webrtc/src/build_overrides/ssl/ssl.gni
I also checked in the secondary tree for:
  C:/Git/owt_webrtc/src/build/secondary/build_overrides/ssl/ssl.gni
See //BUILD.gn:17:1: whence it was imported.
import("webrtc.gni")

And its true there are no files there:

Does anybody know why the files are missing ?

[AoEiuV020]

https://github.com/open-webrtc-toolkit/owt-client-native/blob/main/build_overrides/ssl/ssl.gni
https://github.com/open-webrtc-toolkit/owt-client-native#windows