A error occured while training

[HONGJUNRL]

I used the pre-trained vgg16 model as you provided ,but an error occured :
INFO:tensorflow:Fine-tuning from None. Ignoring missing vars: True.

Traceback (most recent call last):

File "train_ssd.py", line 464, in

  tf.app.run()

File "/home/h/anaconda3/lib/python3.6/site-packages/tensorflow/python/platform/app.py", line 126, in run

  _sys.exit(main(argv))

File "train_ssd.py", line 460, in main

  hooks=[logging_hook], max_steps=FLAGS.max_number_of_steps)

File "/home/h/anaconda3/lib/python3.6/site-packages/tensorflow/python/estimator/estimator.py", line 352, in train

  loss = self._train_model(input_fn, hooks, saving_listeners)

File "/home/h/anaconda3/lib/python3.6/site-packages/tensorflow/python/estimator/estimator.py", line 812, in _train_model

  features, labels, model_fn_lib.ModeKeys.TRAIN, self.config)

File "/home/h/anaconda3/lib/python3.6/site-packages/tensorflow/python/estimator/estimator.py", line 793, in _call_model_fn

  model_fn_results = self._model_fn(features=features, **kwargs)

File "/home/h/anaconda3/lib/python3.6/site-packages/tensorflow/contrib/estimator/python/estimator/replicate_model_fn.py", line 220, in single_device_model_fn

  local_ps_devices=ps_devices)[0]  # One device, so one spec is out.

File "/home/h/anaconda3/lib/python3.6/site-packages/tensorflow/contrib/estimator/python/estimator/replicate_model_fn.py", line 558, in _get_loss_towers

  **optional_params)

File "train_ssd.py", line 403, in ssd_model_fn
scaffold=tf.train.Scaffold(init_fn=get_init_fn()))
File "train_ssd.py", line 158, in get_init_fn

  name_remap={'/kernel': '/weights', '/bias': '/biases'})

File "/home/h/Desktop/SSD.TensorFlow-master/utility/scaffolds.py", line 66, in get_init_fn_for_scaffold

  reader = tf.train.NewCheckpointReader(checkpoint_path)

File "/home/h/anaconda3/lib/python3.6/site-packages/tensorflow/python/pywrap_tensorflow_internal.py", line 254, in NewCheckpointReader

  return CheckpointReader(compat.as_bytes(filepattern), status)

File "/home/h/anaconda3/lib/python3.6/site-packages/tensorflow/python/util/compat.py", line 67, in as_bytes

  (bytes_or_text,))

TypeError: Expected binary or unicode string, got None

could you help me

[HiKapok]

@HONGJUNRL please check older closed issue for solution. If the problem exists, please let me know

[HONGJUNRL]

I have already checked them ,but still can't solve it

[HONGJUNRL]

I have solved it, but a new error occured: Nan loss during training, so what's the matter?

[HiKapok]

@HONGJUNRL sorry for late reply. How do you solve that? Just give a directory path of checkpoint? Did you gave the full file path of checkpoint in the begining? Before we solve NAN problem, you should first check you batch size. If you have changed your batch size then lower the learning rate and run more steps

[HONGJUNRL]

change this code 'tf.app.flags.DEFINE_string('checkpoint_path', './model','The path to a checkpoint from which to fine-tune.')' as 'tf.app.flags.DEFINE_string('checkpoint_path', './model/vgg16.ckpt','The path to a checkpoint from which to fine-tune.')'. and I change learning rate as 1e-4, it works till now

[HONGJUNRL]

Lastly,thanks for helping me