Traceback (most recent call last):


 "/Users/foo/Workspace/pythonprj/stock/lib/python3.8/site-packages/pandas/core/arrays/datetimes.py", line 1979, in objects_to_datetime64ns

values, tz_parsed = conversion.datetime_to_datetime64(data)


 "pandas/_libs/tslibs/conversion.pyx", line 200, in pandas._libs.tslibs.conversion.datetime_to_datetime64
TypeError: Unrecognized value type: <class 'str'>

`Traceback (most recent call last):


 "train.py", line 162, in <module>

main()


 "train.py", line 158, in main

meta=meta)


 "/usr/local/lib/python3.6/dist-packages/mmdet/apis/train.py", line 179, in train_detector

runner.run(data_loaders, cfg.workflow, cfg.total_epochs)


 "/usr/local/lib/python3.6/dist-packages/mmcv/runner/epoch_based_runner.py", line 123, in run

epoch_runner(data_loaders[i], **kwargs)


 "/usr/local/lib/python3.6/dist-packages/mmcv/runner/epoch_based_runner.py", line 44, in train

self.call_hook('after_train_iter')


 "/usr/local/lib/python3.6/dist-packages/mmcv/runner/base_runner.py", line 241, in call_hook

getattr(hook, fn_name)(self)


 "/usr/local/lib/python3.6/dist-packages/mmcv/runner/hooks/logger/base.py", line 45, in after_train_iter

self.log(runner)


 "/usr/local/lib/python3.6/dist-packages/mmcv/runner/hooks/logger/text.py", line 140, in log

self._dump_log(log_dict, runner)


 "/usr/local/lib/python3.6/dist-packages/mmcv/runner/hooks/logger/text.py", line 107, in _dump_log

mmcv.dump(json_log, f, file_format='json')


 "/usr/local/lib/python3.6/dist-packages/mmcv/fileio/io.py", line 82, in dump

handler.dump_to_fileobj(obj, file, **kwargs)


 "/usr/local/lib/python3.6/dist-packages/mmcv/fileio/handlers/json_handler.py", line 13, in dump_to_fileobj

json.dump(obj, file, **kwargs)


 "/usr/lib/python3.6/json/__init__.py", line 179, in dump

for chunk in iterable:


 "/usr/lib/python3.6/json/encoder.py", line 430, in _iterencode

yield from _iterencode_dict(o, _current_indent_level)


 "/usr/lib/python3.6/json/encoder.py", line 404, in _iterencode_dict

yield from chunks


 "/usr/lib/python3.6/json/encoder.py", line 437, in _iterencode

o = _default(o)


 "/usr/lib/python3.6/json/encoder.py", line 180, in default

o.__class__.__name__)
TypeError: Object of type 'Tensor' is not JSON serializable`
