Vulkan RHI build error

Just had this issue. Was able to fix it by checking “SM6” under “Vulkan Targeted Shader Formats” under “Platforms - Windows” in Project Settings. The issue seems to be that Vulkan isn’t able to find a valid shader format that is enabled, so it crashes. Enabling SM6 (or SM5, which probably works too, and might be worth enabling for good measure) fixes that.