Urgent please help for training (deeplapv3+)

We were working on this code in colab notebook

, we changed the loss function to binary-cross intropy because the original loss function was giving us a nan value for the (loss). But unfortunately the training cell gave us this error:

InvalidArgumentError: Graph execution error:

2 root error(s) found.
(0) INVALID_ARGUMENT: Input is empty.
[[{{node DecodePng_1}}]]
[[IteratorGetNext]]
[[IteratorGetNext/_2]]
(1) INVALID_ARGUMENT: Input is empty.
[[{{node DecodePng_1}}]]
[[IteratorGetNext]]
0 successful operations.
0 derived errors ignored. [Op:__inference_test_function_41271]

We don’t know how to deal with this kind of error :frowning: can anyone please help us ? :cry: