Traceback (most recent call last):


 "C:/#######################/rllib/AlphaZero_Trainer.py", line 99, in <module>

action = alphazero_trainer.compute_action(observation=obs)


 "C:\#######################\ray\rllib\agents\trainer.py", line 830, in compute_action

timestep=self.global_vars["timestep"])


 "C:\#######################\ray\rllib\policy\policy.py", line 194, in compute_single_action

timestep=timestep)


 "C:\#######################\ray\rllib\contrib\alpha_zero\core\alpha_zero_policy.py", line 50, in compute_actions

for i, episode in enumerate(episodes):
TypeError: 'NoneType' object is not iterable

Traceback (most recent call last):

 "C:\Program 
s (x86)\JetBrains\PyCharm 2016.2\helpers\pydev\pydevd.py", line 1556, in <module>
globals = debugger.run(setup['file'], None, None, is_module)

 "C:\Program 
s (x86)\JetBrains\PyCharm 2016.2\helpers\pydev\pydevd.py", line 940, in run
pydev_imports.execfile(file, globals, locals)
# execute the script

 "C:\Program 
s (x86)\JetBrains\PyCharm 2016.2\helpers\pydev_pydev_imps_pydev_execfile.py", line 18, in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc)

 "C:/Users/develop/code/ladder/test.py", line 41, in <module>
model_recovered = model_from_config(config)

 "C:\Program 
s\Dragonfly\Anaconda3\lib\site-packages\keras-1.0.7-py3.5.egg\keras\models.py", line 177, in model_from_config
return layer_from_config(config, custom_objects=custom_objects)

 "C:\Program 
s\Dragonfly\Anaconda3\lib\site-packages\keras-1.0.7-py3.5.egg\keras\utils\layer_utils.py", line 25, in layer_from_config
**class_name = config['class_name']KeyError: 'class_name'**