thank you   im not sure i fully understand the log, but it seems like the loss > 0 in the first few epochs, and reaching 0 at epoch 1408, so can you explain what are your concerns?
Also, can you explain the challenge you try to solve? i see the input shape is
(8, 3, 40, 128, 128), please provide some context about the input, I’m guessing the image sizes are 128x128, there are 3 channels, your batch size = 8, not sure what is the 40?
Knowing what you try to do can help a lot, even share some code.
Roy