tensorboard可视化报错DecodeError: Error parsing message

Traceback (most recent call last):
  File "/home/user1/miniconda3/envs/hardsample/lib/python2.7/threading.py", line 801, in __bootstrap_inner
    self.run()
  File "/home/user1/miniconda3/envs/hardsample/lib/python2.7/threading.py", line 754, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/home/user1/miniconda3/envs/hardsample/lib/python2.7/site-packages/tensorboard/backend/application.py", line 588, in _reload
    multiplexer.Reload()
  File "/home/user1/miniconda3/envs/hardsample/lib/python2.7/site-packages/tensorboard/backend/event_processing/plugin_event_multiplexer.py", line 246, in Reload
    Worker()
  File "/home/user1/miniconda3/envs/hardsample/lib/python2.7/site-packages/tensorboard/backend/event_processing/plugin_event_multiplexer.py", line 224, in Worker
    accumulator.Reload()
  File "/home/user1/miniconda3/envs/hardsample/lib/python2.7/site-packages/tensorboard/backend/event_processing/plugin_event_accumulator.py", line 177, in Reload
    for event in self._generator.Load():
  File "/home/user1/miniconda3/envs/hardsample/lib/python2.7/site-packages/tensorboard/backend/event_processing/directory_watcher.py", line 89, in Load
    for event in self._LoadInternal():
  File "/home/user1/miniconda3/envs/hardsample/lib/python2.7/site-packages/tensorboard/backend/event_processing/directory_watcher.py", line 117, in _LoadInternal
    for event in self._loader.Load():
  File "/home/user1/miniconda3/envs/hardsample/lib/python2.7/site-packages/tensorboard/backend/event_processing/event_file_loader.py", line 95, in Load
    yield event_pb2.Event.FromString(record)
DecodeError: Error parsing message

解决：
一个log目录下只放一个events文件
$ tensorboard --logdir logs/log1/