报错内容
ValueError: Attempting to unscale FP16 gradients.

报错位置

                if accelerator.sync_gradients:
                    params_to_clip = (
                        itertools.chain(unet_lora_parameters, text_lora_parameters_one, text_lora_parameters_two)
                        if args.train_text_encoder
                        else unet_lora_parameters
                    )
                    accelerator.clip_grad_norm_(params_to_clip, args.max_grad_norm)

解决

https://github.com/huggingface/accelerate/issues/1778