TypeError: 'PrefetchDataset' object is not subscriptable

[lianjili123]

deer TropComplique:
When I run train.py, a TypeError arised like:
INFO:tensorflow:Using config: {'_num_ps_replicas': 0, '_tf_random_seed': None, '_save_checkpoints_steps': None, '_model_dir': '/home/dan/work/light-head-rcnn/models/run01/', '_keep_checkpoint_every_n_hours': 10000, '_is_chief': True, '_task_type': 'worker', '_log_step_count_steps': 100, '_save_summary_steps': 200, '_master': '', '_task_id': 0, '_session_config': gpu_options {
visible_device_list: "0"
}
, '_service': None, '_num_worker_replicas': 1, '_cluster_spec': <tensorflow.python.training.server_lib.ClusterSpec object at 0x7f67bdd7c6a0>, '_keep_checkpoint_max': 5, '_save_checkpoints_secs': 600}
INFO:tensorflow:Running training and evaluation locally (non-distributed).
INFO:tensorflow:Start train and evaluate loop. The evaluate will happen after 3600 secs (eval_spec.throttle_secs) or training is finished.
Traceback (most recent call last):
File "/home/lianji/light-head-rcnn-master/train.py", line 68, in
tf.estimator.train_and_evaluate(estimator, train_spec, eval_spec)
File "/home/lianji/anaconda2/envs/shufflenetv2/lib/python3.5/site-packages/tensorflow/python/estimator/training.py", line 430, in train_and_evaluate
executor.run_local()
File "/home/lianji/anaconda2/envs/shufflenetv2/lib/python3.5/site-packages/tensorflow/python/estimator/training.py", line 609, in run_local
hooks=train_hooks)
File "/home/lianji/anaconda2/envs/shufflenetv2/lib/python3.5/site-packages/tensorflow/python/estimator/estimator.py", line 302, in train
loss = self._train_model(input_fn, hooks, saving_listeners)
File "/home/lianji/anaconda2/envs/shufflenetv2/lib/python3.5/site-packages/tensorflow/python/estimator/estimator.py", line 711, in _train_model
features, labels, model_fn_lib.ModeKeys.TRAIN, self.config)
File "/home/lianji/anaconda2/envs/shufflenetv2/lib/python3.5/site-packages/tensorflow/python/estimator/estimator.py", line 694, in _call_model_fn
model_fn_results = self._model_fn(features=features, **kwargs)
File "/home/lianji/light-head-rcnn-master/model.py", line 25, in model_fn
detector = Detector(features['images'], feature_extractor, is_training, params)
TypeError: 'PrefetchDataset' object is not subscriptable
Can you tell me how can solve it?

[TropComplique]

Do you use tensorflow 1.9 ?