Azure ML 中的 Keras model.fit 失败

如何解决Azure ML 中的 Keras model.fit 失败

我正在尝试使用少量图像在 Azure ML 中训练一个简单的测试模型。我正在将训练代码从本地 PC 推送到 Azure 云。它使用图像生成器数据流在云中找到图像（下面的屏幕截图）。

模型创建也很好，我可以打印模型的摘要。但是当我在做 model.fit 时，得到这个预期的错误。但是当我在本地 PC 上运行相同的代码时，我没有收到任何错误。

任何线索都会有所帮助。提前致谢。

model.fit(train_generator,validation_data=valid_generator,epochs=1,steps_per_epoch=STEP_SIZE_TRAIN,validation_steps=STEP_SIZE_VALID)
  File "/azureml-envs/azureml_ad50fdad40ee16a2c46e9c45c93908c0/lib/python3.6/site-packages/tensorflow/python/keras/engine/training.py",line 108,in _method_wrapper
    return method(self,*args,**kwargs)
  File "/azureml-envs/azureml_ad50fdad40ee16a2c46e9c45c93908c0/lib/python3.6/site-packages/tensorflow/python/keras/engine/training.py",line 1063,in fit
    steps_per_execution=self._steps_per_execution)
  File "/azureml-envs/azureml_ad50fdad40ee16a2c46e9c45c93908c0/lib/python3.6/site-packages/tensorflow/python/keras/engine/data_adapter.py",line 1117,in __init__
    model=model)
  File "/azureml-envs/azureml_ad50fdad40ee16a2c46e9c45c93908c0/lib/python3.6/site-packages/tensorflow/python/keras/engine/data_adapter.py",line 916,in __init__
    **kwargs)
  File "/azureml-envs/azureml_ad50fdad40ee16a2c46e9c45c93908c0/lib/python3.6/site-packages/tensorflow/python/keras/engine/data_adapter.py",line 786,in __init__
    peek,x = self._peek_and_restore(x)
  File "/azureml-envs/azureml_ad50fdad40ee16a2c46e9c45c93908c0/lib/python3.6/site-packages/tensorflow/python/keras/engine/data_adapter.py",line 920,in _peek_and_restore
    return x[0],x
  File "/azureml-envs/azureml_ad50fdad40ee16a2c46e9c45c93908c0/lib/python3.6/site-packages/keras_preprocessing/image/iterator.py",line 65,in __getitem__
    return self._get_batches_of_transformed_samples(index_array)
  File "/azureml-envs/azureml_ad50fdad40ee16a2c46e9c45c93908c0/lib/python3.6/site-packages/keras_preprocessing/image/iterator.py",line 231,in _get_batches_of_transformed_samples
    x = img_to_array(img,data_format=self.data_format)
  File "/azureml-envs/azureml_ad50fdad40ee16a2c46e9c45c93908c0/lib/python3.6/site-packages/keras_preprocessing/image/utils.py",line 309,in img_to_array
    x = np.asarray(img,dtype=dtype)
  File "/azureml-envs/azureml_ad50fdad40ee16a2c46e9c45c93908c0/lib/python3.6/site-packages/numpy/core/_asarray.py",line 83,in asarray
    return array(a,dtype,copy=False,order=order)
TypeError: __array__() takes 1 positional argument but 2 were given

更新：问题通过降级 PIL 得到解决，从 Kaveh 在这篇文章中的回答中找到了解决方案：here。我不会删除这个问题，因为有人可能正在寻找类似的问题。

问候，