loss: nan, val_loss & val_acc missing

[Thoraxisa]

Hey,
wanted to ask on which tensorflow version this code is running, because somehow i can't make the code work - I'm just a beginner, so I hope it's fine to ask.
When the model is training it always shows 'loss: nan', val_loss and val_acc are missing completely. I put your whole code into a .py and threw everything into the main, if this information somehow is helpful.. I'm using Tensorflow 1.15.
I would really appreciate your help!
Thank you in advance,
Thoraxisa

[dzlab]

@Thoraxisa which code? most code here would works on Tensorflow 2