Typeerror occurred at tensorforce 0.4.3 When run hypersearch.py

[TOSUKUi]

I just run hypersearch.py with no argument then get the following error. I am not familiar with tensorforce but I know it happened statement in tensorforce/execution/runner.py which show how episodes progress.

I could run hypersearch.py with my fixed tensorforce which is commentted out this error state btw.

My environment

• Tensorforce 0.4.3
• Tensorflow-gpu 1.13.1
• tforce_btc_trader v0.2

the error

Traceback (most recent call last):
  File "hypersearch.py",
 line 364, in <module>
    main()
  File "hypersearch.py", line 357, in main
    best = fmin(loss_fn, space=space, algo=tpe.suggest, max_evals=max_evals, trials=trials)
  File "/usr/local/lib/python3.6/site-packages/hyperopt/fmin.py", line 388, in fmin
    show_progressbar=show_progressbar,
  File "/usr/local/lib/python3.6/site-packages/hyperopt/base.py", line 639, in fmin
    show_progressbar=show_progressbar)
  File "/usr/local/lib/python3.6/site-packages/hyperopt/fmin.py", line 407, in fmin
    rval.exhaust()
  File "/usr/local/lib/python3.6/site-packages/hyperopt/fmin.py", line 262, in exhaust
    self.run(self.max_evals - n_done, block_until_done=self.asynchronous)
  File "/usr/local/lib/python3.6/site-packages/hyperopt/fmin.py", line 227, in run
    self.serial_evaluate()
  File "/usr/local/lib/python3.6/site-packages/hyperopt/fmin.py", line 141, in serial_evaluate
    result = self.domain.evaluate(spec, ctrl)
  File "/usr/local/lib/python3.6/site-packages/hyperopt/base.py", line 844, in evaluate
    rval = self.fn(pyll_rval)
  File "hypersearch.py", line 315, in loss_fn
    env.train_and_test(agent)
  File "/root/tforce_btc_trader/btc_env.py", line 255, in train_and_test
    runner.run(timesteps=train_steps)
  File "/root/tensorforce2/tensorforce/execution/runner.py", line 149, in run
    pbar.update(num_episodes - self.global_episode)
TypeError: unsupported operand type(s) for -: 'NoneType' and 'int'