The error of load image

[speedhawk]

Hi, I'm trying to use 'python align_images.py raw_images/ aligned_images/' to see the latent space of my owe image data. But it threw an error reminding which is "Unknown image file format: Unable to load image in file raw_images/.ipynb_checkpoints". I run this model on colab. Can anyone help me to fix this problem? Many thanks!!