Traceback (most recent call last):


 "train.py", line 184, in <module>

tf.app.run()


 "C:\Anaconda\envs\tensorflow1\lib\site-packages\tensorflow\python\platform\app.py", line 125, in run

_sys.exit(main(argv))


 "C:\Anaconda\envs\tensorflow1\lib\site-packages\tensorflow\python\util\deprecation.py", line 306, in new_func

return func(*args, **kwargs)


 "train.py", line 180, in main

graph_hook_fn=graph_rewriter_fn)


 "C:\Anaconda\envs\tensorflow1\lib\site-packages\object_detection-0.1-py3.6.egg\object_detection\legacy\trainer.py", line 304, in train

train_config.optimizer)


 "C:\Anaconda\envs\tensorflow1\lib\site-packages\object_detection-0.1-py3.6.egg\object_detection\builders\optimizer_builder.py", line 50, in build

learning_rate = _create_learning_rate(config.learning_rate)


 "C:\Anaconda\envs\tensorflow1\lib\site-packages\object_detection-0.1-py3.6.egg\object_detection\builders\optimizer_builder.py", line 112, in _create_learning_rate

learning_rate_sequence, config.warmup)


 "C:\Anaconda\envs\tensorflow1\lib\site-packages\object_detection-0.1-py3.6.egg\object_detection\utils\learning_schedules.py", line 160, in manual_stepping

raise ValueError('First step cannot be zero.')
ValueError: First step cannot be zero.

Traceback (most recent call last):


 "./train.py", line 132, in <module>

main()


 "./train.py", line 128, in main

load_to_memory=load_to_memory, batch_size=batch_size, nb_epoch=nb_epoch)


 "./train.py", line 89, in train

workers=4)


 "/usr/local/lib/python3.5/dist-packages/keras/legacy/interfaces.py", line 88, in wrapper

return func(*args, **kwargs)


 "/usr/local/lib/python3.5/dist-packages/keras/models.py", line 1124, in fit_generator

initial_epoch=initial_epoch)


 "/usr/local/lib/python3.5/dist-packages/keras/legacy/interfaces.py", line 88, in wrapper

return func(*args, **kwargs)


 "/usr/local/lib/python3.5/dist-packages/keras/engine/training.py", line 1877, in fit_generator

str(generator_output))
ValueError: output of generator should be a tuple `(x, y, sample_weight)` or `(x, y)`. Found: None
