Where can I get this file teacher.pth?

[Jiawen-huang]

when I perform this command:
python train_distillation.py -r 0.5 -a 0.5 --path_t /path/to/teacher.pth --trial born1 --model_path /path/to/save --tb_path /path/to/tensorboard --data_root /path/to/data_root
The error is :
NotImplementedError: model to not supported in dataset mini-imagenet:

I think that the reason is that I fail to find this file: teacher.pth.
Is this file(teacher.pth) automatically generated?