cannot run the code

[GilbertFan]

Hello
When I try to run the code with your example, the training stops at the second epoch, with the following error:

84it [00:00, ?it/s]
2021-08-10 17:33:16.937495: I tensorflow/core/platform/cpu_feature_guard.cc:142] Your CPU supports instructions that this TensorFlow binary was not compiled to use: AVX2
WARNING:tensorflow:Falling back from v2 loop because of error: Failed to find data adapter that can handle input: <class 'scipy.sparse.csr.csr_matrix'>, <class 'NoneType'>
Train on 84 samples
Epoch 1/1000
84/84 [==============================] - 0s 522us/sample - loss: 3.0483
Epoch 2/1000
Traceback (most recent call last):
File "master.py", line 100, in
epochs=1000
File "C:\Users\cqf99\anaconda3\envs\embedding\lib\site-packages\tensorflow_core\python\keras\engine\training.py", line 728, in fit
use_multiprocessing=use_multiprocessing)
File "C:\Users\cqf99\anaconda3\envs\embedding\lib\site-packages\tensorflow_core\python\keras\engine\training_arrays.py", line 674, in fit
steps_name='steps_per_epoch')
File "C:\Users\cqf99\anaconda3\envs\embedding\lib\site-packages\tensorflow_core\python\keras\engine\training_arrays.py", line 385, in model_iteration
ins_batch[i] = ins_batch[i].toarray()
AttributeError: 'numpy.ndarray' object has no attribute 'toarray'