stable-diffusion ImportError: cannot import name 'SAFE_WEIGHTS

I did exactly following the guidelines, but when I run the script, following errors occur, any idea how to fix it? script: python scripts/txt2img.py --prompt "a photograph of an astronaut riding a horse" --plms

error msg: Traceback (most recent call last): File "scripts/txt2img.py", line 22, in from diffusers.pipelines.stable_diffusion.safety_checker import StableDiffusionSafetyChecker File "/home/liberttyy/anaconda3/envs/ldm/lib/python3.8/site-packages/diffusers/init.py", line 27, in from .pipelines import OnnxRuntimeModel File "/home/liberttyy/anaconda3/envs/ldm/lib/python3.8/site-packages/diffusers/pipelines/init.py", line 18, in from .dance_diffusion import DanceDiffusionPipeline File "/home/liberttyy/anaconda3/envs/ldm/lib/python3.8/site-packages/diffusers/pipelines/dance_diffusion/init.py", line 1, in from .pipeline_dance_diffusion import DanceDiffusionPipeline File "/home/liberttyy/anaconda3/envs/ldm/lib/python3.8/site-packages/diffusers/pipelines/dance_diffusion/pipeline_dance_diffusion.py", line 21, in from ..pipeline_utils import AudioPipelineOutput, DiffusionPipeline File "/home/liberttyy/anaconda3/envs/ldm/lib/python3.8/site-packages/diffusers/pipelines/pipeline_utils.py", line 63, in from transformers.utils import SAFE_WEIGHTS_NAME as TRANSFORMERS_SAFE_WEIGHTS_NAME ImportError: cannot import name 'SAFE_WEIGHTS_NAME' from 'transformers.utils' (/home/liberttyy/anaconda3/envs/ldm/lib/python3.8/site-packages/transformers/utils/init.py)