Running nnUNet_train 3d_fullres nnUNetTrainerV2 2 0 --npz reports an error!

[SuperLuckyKris]

I've run the commands with no errors
nnUNet_convert_decathlon_task -i /home/kris/fabian/nnUNet_raw/nnUNet_raw_data/Task02_Hippocampus
and
nnUNet_plan_and_preprocess -t 2 --verify_dataset_integrity

Relevant documents were also generated：

(base) kris@DESKTOP-7VO9MO7:~/fabian/nnUNet_preprocessed/Task002_Hippocampus$ ls
dataset.json gt_segmentations nnUNetData_plans_v2.1_stage0 nnUNetPlansv2.1_plans_3D.pkl
dataset_properties.pkl nnUNetData_plans_v2.1_2D_stage0 nnUNetPlansv2.1_plans_2D.pkl

But I get an error when I run this code
nnUNet_train 3d_fullres nnUNetTrainerV2 2 0 --npz