>>> keras.utils.plot_model(model) Traceback (most recent call last): File "/home/user/dev/git/py_test/python/hongong/ch08/test_08_2.py", line 29, in keras.utils.plot_model(model) File "/home/user/.local/lib/python3.8/site-packages/tensorflow/python/keras/utils/vis_utils.py", line 322, in plot_model dot = model_to_dot( File "/home/user/.local/lib/python3.8/site-packages/tensorflow/python/keras/ut..