Recieving JSON file instead of kext

[rivan2k]

I installed the latest kext release and placed the USBToolBox.kext file in EFI/OC/Kext.
I then installed the Windows.exe and ran it.
From here, I pressed "D" to discover the ports and once this process was finished, I backed out.
Next I chose "Select Ports and Build Kext" which once I was inside, I pressed "A" to select all before pressing K to build.
The window then closes immediately and I see a JSON file named "USB" produced.
I am expecting a .kext file to be produced.

I am not sure how to debug this.

Hardware:
I am on a lenovo laptop (lenovo flex 5). I am unsure where to find other information but I do know the CPU is AMD Ryzen 7 7730U.
The graphics just says AMD Radeon TM Graphics.

Please let me know what steps I can take from here.

[BlazeBoruto]

https://dortania.github.io/OpenCore-Install-Guide/find-hardware.html to find more data about your device