Failed loading VAE checkpoint

[ROGERDJQ]

Thank you for your wonderful contributions! I have some issues with the loading of VAE checkpoint.
when loading the checkpoint (https://huggingface.co/LanguageBind/Open-Sora-Plan-v1.0.0/tree/main/vae), we found that code
vae = CausalVAEModel.from_pretrained('./ckpt/Open-Sora-Plan-v1.0.0/vae/')
raises error
UnpicklingError: invalid load key, '\xb0'.

We also try another solution as
vae = CausalVAEModel.from_config('./ckpt/Open-Sora-Plan-v1.0.0/vae/config.json') model = vae.init_from_ckpt('./ckpt/Open-Sora-Plan-v1.0.0/vae/diffusion_pytorch_model.safetensors')
failed again with same error.

Additionally, directly applying pickle returns the same error. So what could be the reason for that? and how to load the checkpoint?

[LinB203]

CausalVAEModel.from_pretrained('./ckpt/Open-Sora-Plan-v1.0.0/vae/'). It should be a config.json and weight under the folder.