Require for the image data of Zero

[Katherinaxxx]

Hello,
Thanks for your great work!
However, when I try to download the images of zero datasets from image_url, sometimes I will come across a '404 error'. And it really takes a very long time to download from the website links.
So can you offer images of zero datasets?

[yuxie11]

These images were all checked for download when the dataset was first constructed. Over time, there may be problems that cannot be downloaded due to the images dropped from the original website. You can look at the ratio of 404. If it is large, it may be a problem with your download method or your own network.