question of training bug

[wfs123456]

Hello, this has a error in draw_linear_ring fuction of torch_lydorn/torchvision/transforms/angle_field_init.py,
traceback info: ValueError: diff requires input that is at least one dimensional

[wfs123456]

[lixianshen20]

ValueError: diff requires input that is at least one dimensional，I meet this error,too

[zuixiaosanlang]

ValueError: diff requires input that is at least one dimensional，I meet this error,too