TypeError: Can't index by type: <class 'NoneType'>; only int, string or slice

[lionel-xie]

when i run CollectMineral(ppo)-->stata_group：
state = np.dstack((marine_map, mineral_map)).reshape(32322)
came out：
E0330 17:18:23.828569 81116 _logging.py:54] close status: 16896
W0330 17:18:26.929746 81116 sc_process.py:200] Killing the process.
Traceback (most recent call last):
File "E:/Anaconda/Lib/site-packages/pysc2/agents/pysc2_rl-master/CollectMineral(ppo)/CollectMineral.py", line 143, in
train()
File "E:/Anaconda/Lib/site-packages/pysc2/agents/pysc2_rl-master/CollectMineral(ppo)/CollectMineral.py", line 71, in train
state = obs2state(obs)
File "E:\Anaconda\Lib\site-packages\pysc2\agents\pysc2_rl-master\CollectMineral(ppo)\state_group.py", line 33, in obs2state
state = np.dstack((marine_map, mineral_map)).reshape(32322)
File "C:\Users\ASUS\AppData\Roaming\Python\Python36\site-packages\numpy\lib\shape_base.py", line 699, in dstack
return _nx.concatenate([atleast_3d(_m) for _m in tup], 2)
File "C:\Users\ASUS\AppData\Roaming\Python\Python36\site-packages\numpy\lib\shape_base.py", line 699, in
return _nx.concatenate([atleast_3d(_m) for _m in tup], 2)
File "C:\Users\ASUS\AppData\Roaming\Python\Python36\site-packages\numpy\core\shape_base.py", line 199, in atleast_3d
result = ary[:,:, newaxis]
File "E:\Anaconda\lib\site-packages\pysc2\lib\named_array.py", line 145, in getitem
index = _get_index(obj, index)
File "E:\Anaconda\lib\site-packages\pysc2\lib\named_array.py", line 207, in _get_index
"Can't index by type: %s; only int, string or slice" % type(index))
TypeError: Can't index by type: <class 'NoneType'>; only int, string or slice