Error using from_single_file / not working

[Subcode]

Traceback (most recent call last):
File "/home/user/Repositories/run.py", line 6, in
pipe = DemoFusionSDXLPipeline.from_single_file(model_ckpt)
File "/home/user/Repositories/env/lib/python3.10/site-packages/diffusers/loaders.py", line 2268, in from_single_file
raise ValueError(f"Unhandled pipeline class: {pipeline_name}")
ValueError: Unhandled pipeline class: DemoFusionSDXLPipeline

Even after fixing this it does not work giving other errors from init.
I see references in the pipeline file so i assumed this should work?

[Laidawang]

pipe_base = StableDiffusionXLPipeline.from_single_file(PATH,torch_dtype=torch.float16) pipe = DemoFusionSDXLPipeline( vae = pipe_base.vae, text_encoder = pipe_base.text_encoder, text_encoder_2 = pipe_base.text_encoder_2, tokenizer = pipe_base.tokenizer, tokenizer_2 = pipe_base.tokenizer_2, unet = pipe_base.unet, scheduler = pipe_base.scheduler, force_zeros_for_empty_prompt = pipe_base.force_zeros_for_empty_prompt, )
try this,works for me.

[deroberon]

I can help on the root cause of this one. This is because the diffusers python library, in the "single_file.py" (where implements "from_single_file" function) expects that the class name contains the word "StableDiffusion", as you can see here:

https://github.com/huggingface/diffusers/blob/2d94c7838e273c40920ffd6d24d724357add7f2d/src/diffusers/loaders/single_file.py#L207C15-L207C30

and the class implemented here in pipeline_demodifusion_sdxl.py is called "DemoFusionSDXLPipeline" and for not contain the "StableDiffusion" word in the name, the load function fails.

Just changing the name of the class for something like: "DemoFusionStableDiffusionSDXLPipeline" will solve the problem and you can use from_single_file almost without any additional args.