Traceback (most recent call last):


 "e:\WPy-3710\python-3.7.1.amd64\lib\site.py", line 439, in register_readline

readline.read_history_file(history)


 "e:\WPy-3710\python-3.7.1.amd64\lib\site-packages\pyreadline\rlmain.py", line 165, in read_history_file

self.mode._history.read_history_file(filename)


 "e:\WPy-3710\python-3.7.1.amd64\lib\site-packages\pyreadline\lineeditor\history.py", line 82, in read_history_file

for line in open(filename, 'r'):


 "e:\WPy-3710\python-3.7.1.amd64\lib\encodings\cp1252.py", line 23, in decode

return codecs.charmap_decode(input,self.errors,decoding_table)[0]
UnicodeDecodeError: 'charmap' codec can't decode byte 0x81 in position 1748: character maps to <undefined>

Traceback (most recent call last):


 "/home/datamind/anaconda3/envs/can_env/lib/python3.7/runpy.py", line 193, in _run_module_as_main

"__main__", mod_spec)


 "/home/datamind/anaconda3/envs/can_env/lib/python3.7/runpy.py", line 85, in _run_code

exec(code, run_globals)


 "/home/datamind/allennlp/allennlp/tests/training/gan_callback_trainer_test.py", line 343, in <module>

trainer = TrainerBase.from_params(params=params, serialization_dir=serialization_dir)


 "/home/datamind/allennlp/allennlp/common/from_params.py", line 555, in from_params

**extras,


 "/home/datamind/allennlp/allennlp/common/from_params.py", line 583, in from_params

kwargs = create_kwargs(constructor_to_inspect, cls, params, **extras)


 "/home/datamind/allennlp/allennlp/common/from_params.py", line 188, in create_kwargs

cls.__name__, param_name, annotation, param.default, params, **extras


 "/home/datamind/allennlp/allennlp/common/from_params.py", line 287, in pop_and_construct_arg

popped_params = params.pop(name, default) if default != _NO_DEFAULT else params.pop(name)


 "/home/datamind/allennlp/allennlp/common/params.py", line 245, in pop

raise ConfigurationError(f'key "{key}" is required at location "{self.history}"')
allennlp.common.checks.ConfigurationError: key "train_data" is required at location ""
