KeyError Traceback (most recent call last) [<ipython-input-20-d5ae6c907146>](https://localhost:8080/#) in <cell line: 0>() 1 # summarize history for Accuracy 2 fig_acc = plt.figure(figsize=(10, 10)) ----> 3 plt.plot(history.history['acc']) 4 plt.plot(history.history['val_acc']) 5 plt.title('model accuracy') KeyError: 'acc' <Figure size 1000x1000 with 0 Axes>