Solved by BTNug in post #2 
              
              
                Hi @antran96, could you double check: 


BirdDatasetTrain.len() output is > 1?
Please make sure your filenames, ebird_lbls, and ebird_codes outputs* 
-. Do you use batch size 2?
In the image generation, you could also double check whether your I/O is correct by printing inside your code. Because you…