AttributeError: 'WanPrompter' object has no attribute 'tokenizer'

[chensinit]

Hello.
Thank you for provide good project.
I like to train own wan2.1 lora.
So i try to use this project. but i faced error.
Could you help me to resolve problem?

command:
python ./DiffSynth-Studio/examples/wanvideo/train_wan_t2v.py --task data_process --dataset_path ./mp4 --output_path ./outputs --text_encoder_path ./models/umt5_xxl_fp16.safetensors --vae_path ./models/wan_2.1_vae.safetensors --image_encoder_path ./models/wan2.1_t2v_1.3B_fp16.safetensors --tiled --num_frames 81 --height 832 --width 480 --dataloader_num_workers 1

enviroument:
window

error msg:
AttributeError: 'WanPrompter' object has no attribute 'tokenizer'

Thank you!