I have some problems about MC-Simulator's setup, Could you give me some tips about it

[MCZhouyf]

I have some problems about MC-Simulator's setup, Could you give me some tips about it:
when I run validate install.py ,task: harvest_wool with_shears_and_sheep，the error is:
(planner) (base) zzz@zzz-SYS-7048GR-TR:~/MC-Simulator/scripts$ python validate_install.py
[INFO:minedojo.tasks] Loaded 1572 Programmatic tasks, 1558 Creative tasks, and 1 special task: "Playthrough". Totally 3131 tasks loaded.
/home/zzz/anaconda3/envs/planner/lib/python3.9/site-packages/numpy/core/numeric.py:330: RuntimeWarning: invalid value encountered in cast
multiarray.copyto(a, fill_value, casting='unsafe')
[INFO] Create a task with prompt: shear a sheep with shears and a sheep nearby

Launching a Malmo instance with online mode <<<<<<
[INFO:minedojo.tasks] Loaded 1572 Programmatic tasks, 1558 Creative tasks, and 1 special task: "Playthrough". Totally 3131 tasks loaded.
Traceback (most recent call last):
File "/home/zzz/MC-Simulator/scripts/validate_install.py", line 14, in
env.reset()
File "/home/zzz/anaconda3/envs/planner/lib/python3.9/site-packages/gym/core.py", line 292, in reset
return self.env.reset(**kwargs)
File "/home/zzz/MC-Simulator/minedojo/sim/wrappers/ar_nn/delta_inventory_wrapper.py", line 79, in reset
observation = self.env.reset(**kwargs)
File "/home/zzz/anaconda3/envs/planner/lib/python3.9/site-packages/gym/core.py", line 319, in reset
observation = self.env.reset(**kwargs)
File "/home/zzz/MC-Simulator/minedojo/sim/wrappers/ar_nn/nn_action_space_wrapper.py", line 356, in reset
obs = self.env.reset(**kwargs)
File "/home/zzz/MC-Simulator/minedojo/tasks/meta/harvest.py", line 323, in reset
obs = super(HarvestMeta, self).reset(**kwargs)
File "/home/zzz/MC-Simulator/minedojo/tasks/meta/base.py", line 123, in reset
obs, info = self._after_sim_reset_hook(obs, info)
File "/home/zzz/MC-Simulator/minedojo/tasks/meta/base.py", line 464, in _after_sim_reset_hook
mobs_rel_positions = self._mob_spawn_range_spaces[0].sample()
File "/home/zzz/anaconda3/envs/planner/lib/python3.9/site-packages/gym/core.py", line 235, in getattr
raise AttributeError(
AttributeError: attempted to get missing private attribute '_mob_spawn_range_spaces'