My ComfyUI workflow is generating completely black images instead of the expected output.(pic related)

The workflow is importing a Forge gen, and I'm trying to use it in Comfy.
The queue runs and completes without any error in the console, but the final "Save Image" or "Preview Image" node only shows a black square. I attached the workflow JSON file via catbox.

In Forge it was a txt2img +hiresfix

https://files.catbox.moe/nv2b7k.json