Generally, the network connection is unstable. If you can’t download it on the server, you can use the link locally first http://www.cs.toronto.edu/~kriz/cifar-10-python.tar.gz Download the data set, and then upload the file to the server

~/.keras/datasets

Finally, the document was renamed as:

 cifar-10-batches-py.tar.gz

Rerun the code, will automatically read data from the local file, no need to download online

reference resources