AttributeError: 'NoneType' object has no attribute 'log_metric'

I have no idea about the following error, looking forward to someone’s help, thank you! ~~

Traceback (most recent call last):
  File "disfluency_detection/pipelines/sentseg_train.py", line 427, in <module>
    main()
  File "disfluency_detection/pipelines/sentseg_train.py", line 394, in main
    metrics = trainer.evaluate()
  File "/home/xxx/anaconda3/envs/correction/lib/python3.7/site-packages/transformers/trainer.py", line 2044, in evaluate
    self.log(output.metrics)
  File "/home/xxx/anaconda3/envs/correction/lib/python3.7/site-packages/transformers/trainer.py", line 1709, in log
    self.control = self.callback_handler.on_log(self.args, self.state, self.control, logs)
  File "/home/xxx/anaconda3/envs/correction/lib/python3.7/site-packages/transformers/trainer_callback.py", line 371, in on_log
    return self.call_event("on_log", args, state, control, logs=logs)
  File "/home/xxx/anaconda3/envs/correction/lib/python3.7/site-packages/transformers/trainer_callback.py", line 388, in call_event
    **kwargs,
  File "/home/xxx/anaconda3/envs/correction/lib/python3.7/site-packages/transformers/integrations.py", line 354, in on_log
    self.tb_writer.add_scalar(k, v, state.global_step)
  File "/home/xxx/anaconda3/envs/correction/lib/python3.7/site-packages/tensorboardX/writer.py", line 453, in add_scalar
    self.comet_logger.log_metric(tag, display_name, scalar_value, global_step)
AttributeError: 'NoneType' object has no attribute 'log_metric'

[grafaraway]

I used with summary_writer:summary_writer.add_graph( ) before .add_scalar( ) After deleting with summary_writer: , my code could get correct output.

[lanpa]

@DrraBL Can you try whether pip install git+https://github.com/lanpa/tensorboardX helps?