I restart the kernel but no success. Please give me a hint .
ipython-input-39-c395f100af16> in
1 # UNIT TEST
----> 2 inference_summary = summary(inference_model)
3 comparator(inference_summary, music_inference_model_out)
oh yes, thank you. There ist the mistake. The first cell of your picture wasn’t in my notebook. After adding it, it works. I don’t know, why I had lost these cell.