KeyError: ''

[resetLi]

你好，我运行run_predicate_classification.py是报错：
Traceback (most recent call last):
File "run_predicate_classification.py", line 812, in
tf.app.run()
File "/root/anaconda3/envs/python367/lib/python3.6/site-packages/tensorflow/python/platform/app.py", line 40, in run
_run(main=main, argv=argv, flags_parser=_parse_flags_tolerate_undef)
File "/root/anaconda3/envs/python367/lib/python3.6/site-packages/absl/app.py", line 299, in run
_run_main(main, args)
File "/root/anaconda3/envs/python367/lib/python3.6/site-packages/absl/app.py", line 250, in _run_main
sys.exit(main(argv))
File "run_predicate_classification.py", line 690, in main
train_examples, label_list, FLAGS.max_seq_length, tokenizer, train_file)
File "run_predicate_classification.py", line 381, in file_based_convert_examples_to_features
max_seq_length, tokenizer)
File "run_predicate_classification.py", line 343, in convert_single_example
label_ids = _predicate_label_to_id(label_list, label_map)
File "run_predicate_classification.py", line 367, in _predicate_label_to_id
predicate_label_ids[predicate_label_map[label]] = 1
KeyError: ''
请教一下该如何处理？看了之前的issue，没有看懂如何处理