Traceback (most recent call last):


 "trainer.py", line 64, in <module>

train_domain_policy(story_train_file, "models/default/dialogue")


 "trainer.py", line 46, in train_domain_policy

augmentation_factor=0


 "rasa_core/rasa_core/agent.py", line 472, in load_data

debug_plots)


 "rasa_core/rasa_core/training/__init__.py", line 57, in load_data

return g.generate()


 "rasa_core/rasa_core/training/generator.py", line 283, in generate

trackers = self._process_step(step, incoming_trackers)


 "rasa_core/rasa_core/training/generator.py", line 466, in _process_step

tracker.update(event)


 "rasa_core/rasa_core/training/generator.py", line 137, in update

self._append_current_state()


 "rasa_core/rasa_core/training/generator.py", line 107, in _append_current_state

self._states.append(frozenset(state.items()))
AttributeError: 'NoneType' object has no attribute 'append'

Traceback (most recent call last):


 "./test.py", line 8, in <module>

model = HER("CnnPolicy", env, model_class=SAC, verbose=1)


 "/home/tom/git/stable-baselines3/stable_baselines3/her/her.py", line 140, in __init__

self._episode_storage = HerReplayBuffer(


 "/home/tom/git/stable-baselines3/stable_baselines3/her/her_replay_buffer.py", line 62, in __init__

"observation": (self.env.num_envs, self.env.obs_dim),


 "/home/tom/git/stable-baselines3/stable_baselines3/common/vec_env/base_vec_env.py", line 313, in __getattr__

return self.getattr_recursive(name)


 "/home/tom/git/stable-baselines3/stable_baselines3/common/vec_env/base_vec_env.py", line 338, in getattr_recursive

attr = getattr(self.venv, name)
AttributeError: 'DummyVecEnv' object has no attribute 'obs_dim'
