run train_gender_classifier.py in spyder(windows10,python3),get a input data error!

[CodeCat-Q]

### ValueError: No data provided for "input_4". Need data for each key in: ['input_4']

details:
Traceback (most recent call last):

File "", line 1, in
runfile('E:/Python_Space/face_classification-master/src/train_gender_classifier.py', wdir='E:/Python_Space/face_classification-master/src')

File "D:\Anaconda3\envs\tensorflow\lib\site-packages\spyder\utils\site\sitecustomize.py", line 710, in runfile
execfile(filename, namespace)

File "D:\Anaconda3\envs\tensorflow\lib\site-packages\spyder\utils\site\sitecustomize.py", line 101, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)

File "E:/Python_Space/face_classification-master/src/train_gender_classifier.py", line 92, in
validation_steps=int(len(val_keys) / batch_size))

File "D:\Anaconda3\envs\tensorflow\lib\site-packages\keras\legacy\interfaces.py", line 91, in wrapper
return func(*args, **kwargs)

File "D:\Anaconda3\envs\tensorflow\lib\site-packages\keras\engine\training.py", line 1418, in fit_generator
initial_epoch=initial_epoch)

File "D:\Anaconda3\envs\tensorflow\lib\site-packages\keras\engine\training_generator.py", line 217, in fit_generator
class_weight=class_weight)

File "D:\Anaconda3\envs\tensorflow\lib\site-packages\keras\engine\training.py", line 1211, in train_on_batch
class_weight=class_weight)

File "D:\Anaconda3\envs\tensorflow\lib\site-packages\keras\engine\training.py", line 751, in _standardize_user_data
exception_prefix='input')

File "D:\Anaconda3\envs\tensorflow\lib\site-packages\keras\engine\training_utils.py", line 78, in standardize_input_data
'for each key in: ' + str(names))

ValueError: No data provided for "input_4". Need data for each key in: ['input_4']

the exception occur in standardize_input_data() of training_utils.py:
if isinstance(data, dict):
try:
data = [
data[x].values
if data[x].class.name == 'DataFrame' else data[x]
for x in names
]
except KeyError as e:
raise ValueError('No data provided for "' + e.args[0] +
'". Need data '
'for each key in: ' + str(names))

but i run it in cmd environment, it didnot get the error.
why??? please someone can help me!

[VirajDeshwal]

it runs using cmd because you need to provide an argument in cmd. While in spyder you are not providing an argument and thus raising a value missing error.