Fit Generator Issue

[krishnaprasad1996]

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Hello Mam,
I am planning to do a project on behavioral cloning, and I have been following your open source tutorial since then. I am a newbie to deep learning. I've been struck in this step for about a week. I am really sorry if this is a dumb question. Than you in advance for your great help.
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batch_size = 32
nb_epoch = 20

checkpointer = ModelCheckpoint(filepath="./tmp/comma-4c.{epoch:02d}-{val_loss:.2f}.hdf5", verbose=1, save_best_only=False)

model.fit_generator(train_generator,
samples_per_epoch=len(train_samples),
validation_data=validation_generator,
nb_val_samples=len(validation_samples), nb_epoch=nb_epoch,
callbacks=[checkpointer])
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C:\Users\krish\Anaconda3\lib\site-packages\ipykernel_launcher.py:10: UserWarning: The semantics of the Keras 2 argument steps_per_epoch is not the same as the Keras 1 argument samples_per_epoch. steps_per_epoch is the number of batches to draw from the generator at each epoch. Basically steps_per_epoch = samples_per_epoch/batch_size. Similarly nb_val_samples->validation_steps and val_samples->steps arguments have changed. Update your method calls accordingly.

Remove the CWD from sys.path while we load stuff.

C:\Users\krish\Anaconda3\lib\site-packages\ipykernel_launcher.py:10: UserWarning: Update your fit_generator call to the Keras 2 API: fit_generator(<generator..., validation_data=<generator..., callbacks=[<keras.ca..., steps_per_epoch=614, epochs=20, validation_steps=33)

Remove the CWD from sys.path while we load stuff.

Epoch 1/20

Exception in thread Thread-6:
Traceback (most recent call last):
File "C:\Users\krish\Anaconda3\lib\threading.py", line 916, in _bootstrap_inner
self.run()
File "C:\Users\krish\Anaconda3\lib\threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\krish\Anaconda3\lib\site-packages\keras\utils\data_utils.py", line 568, in data_generator_task
generator_output = next(self._generator)
File "", line 13, in generator
center_image = mpimg.imread(name)
File "C:\Users\krish\Anaconda3\lib\site-packages\matplotlib\image.py", line 1278, in imread
im = pilread(fname)
File "C:\Users\krish\Anaconda3\lib\site-packages\matplotlib\image.py", line 1256, in pilread
with Image.open(fname) as image:
File "C:\Users\krish\Anaconda3\lib\site-packages\PIL\Image.py", line 2477, in open
fp = builtins.open(filename, "rb")
OSError: [Errno 22] Invalid argument: './data/C:\Users\krish\Desktop\IMG\center_2017_10_17_19_10_50_094.jpg'

---

StopIteration Traceback (most recent call last)
in ()
8 validation_data=validation_generator,
9 nb_val_samples=len(validation_samples), nb_epoch=nb_epoch,
---> 10 callbacks=[checkpointer])

~\Anaconda3\lib\site-packages\keras\legacy\interfaces.py in wrapper(*args, **kwargs)
85 warnings.warn('Update your ' + object_name + 86 ' call to the Keras 2 API: ' + signature, stacklevel=2)
---> 87 return func(*args, **kwargs)
88 wrapper._original_function = func
89 return wrapper

~\Anaconda3\lib\site-packages\keras\models.py in fit_generator(self, generator, steps_per_epoch, epochs, verbose, callbacks, validation_data, validation_steps, class_weight, max_queue_size, workers, use_multiprocessing, initial_epoch)
1119 workers=workers,
1120 use_multiprocessing=use_multiprocessing,
-> 1121 initial_epoch=initial_epoch)
1122
1123 @interfaces.legacy_generator_methods_support

~\Anaconda3\lib\site-packages\keras\legacy\interfaces.py in wrapper(*args, **kwargs)
85 warnings.warn('Update your ' + object_name + 86 ' call to the Keras 2 API: ' + signature, stacklevel=2)
---> 87 return func(*args, **kwargs)
88 wrapper._original_function = func
89 return wrapper

~\Anaconda3\lib\site-packages\keras\engine\training.py in fit_generator(self, generator, steps_per_epoch, epochs, verbose, callbacks, validation_data, validation_steps, class_weight, max_queue_size, workers, use_multiprocessing, shuffle, initial_epoch)
2009 batch_index = 0
2010 while steps_done < steps_per_epoch:
-> 2011 generator_output = next(output_generator)
2012
2013 if not hasattr(generator_output, 'len'):

StopIteration: