It looks like this python script src-wine/dlls/winevulkan/make_vulkan is generate by makefile.
And this file will be auto delete by make after this error shows.
Is there any way to modify it whith jsdelivr cdn, raw.githubusercontent.com is not accessible in China.
Find it, in file proton_src_dir/wine/dlls/winevulkan/make_vulkan, line 3892, replace https://raw.githubusercontent.com/KhronosGroup/Vulkan-Docs/v{0}/xml/vk.xml to https://cdn.jsdelivr.net/gh/KhronosGroup/Vulkan-Docs@v{0}/xml/vk.xml.
proton 3.7x1 2022-04
I got this error while I was building proton 3.7:
The url in this python script was 404:
https://raw.githubusercontent.com/KhronosGroup/Vulkan-Docs/v{0}/xml/vk.xml