Resume_from_checkpoint not work

Trainer
5 
# default used by the Trainer
trainer = Trainer(resume_from_checkpoint=None)

# resume from a specific checkpoint
trainer = Trainer(resume_from_checkpoint="some/path/to/my_checkpoint.ckpt")

I try to use this, but it is not working.And the version is because of the github project
saic-mdal/lama: :llama: LaMa Image Inpainting, Resolution-robust Large Mask Inpainting with Fourier Convolutions, WACV 2022 (github.com)