[Nstep PER] TypeError: function() got multiple values for keyword argument 'done'

TypeError                                 Traceback (most recent call last)
TypeError: function() got multiple values for keyword argument 'done'
Exception ignored in: 'cpprb.PyReplayBuffer.PrioritizedReplayBuffer.on_episode_end'
TypeError: function() got multiple values for keyword argument 'done'
---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
<ipython-input-4-07c4883177cb> in <module>()
     82            rew=reward,
     83            next_obs=next_observation,
---> 84            done=done)
     85     observation = next_observation
     86 

cpprb/PyReplayBuffer.pyx in cpprb.PyReplayBuffer.PrioritizedReplayBuffer.add()

cpprb/PyReplayBuffer.pyx in cpprb.PyReplayBuffer.ReplayBuffer.add()

KeyError: 'discounts'