The X server screen sometimes work but sometimes stop.

This is the same issue from [this](https://github.com/allenai/manipulathor/issues/22)

Hi. Thanks for your work!

I followed your instructions and checked sometimes the X server works, and sometimes it doesn't. To be specific, the screen just stops and don't move. This happens right after the initialization stage. The final code of the screen is shown as follows:

> 08/13 23:26:33 INFO: Starting 0-th SingleProcessVectorSampledTasks generator with args {'mp_ctx': , 'scenes': ['FloorPlan16_physics', 'FloorPlan17_physics', 'FloorPlan18_physics', 'FloorPlan19_physics', 'FloorPlan20_physics'], 'env_args': {'gridSize': 0.25, 'width': 224, 'height': 224, 'visibilityDistance': 1.0, 'agentMode': 'arm', 'fieldOfView': 100, 'agentControllerType': 'mid-level', 'server_class': , 'useMassThreshold': True, 'massThreshold': 10, 'autoSimulation': False, 'autoSyncTransforms': True, 'renderDepthImage': True, 'x_display': '0.1'}, 'max_steps': 200, 'sensors': [, , , , ], 'action_space': Discrete(13), 'seed': 506456969, 'deterministic_cudnn': False, 'rewards_config': {'step_penalty': -0.01, 'goal_success_reward': 10.0, 'pickup_success_reward': 5.0, 'failed_stop_reward': 0.0, 'shaping_weight': 1.0, 'failed_action_penalty': -0.03}, 'scene_period': 'manual', 'sampler_mode': 'train', 'cap_training': None} [vector_sampled_tasks.py: 975]

After this there is no console information that is given, and I confirmed that the entire system is not working. Do you know when does this happen and how can I solve this?

When I terminated the process the error is given as follows:

> Traceback (most recent call last):
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/process.py", line 318, in _bootstrap
util._exit_function()
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/util.py", line 357, in _exit_function
p.join()
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/process.py", line 149, in join
res = self._popen.wait(timeout)
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/popen_fork.py", line 47, in wait
return self.poll(os.WNOHANG if timeout == 0.0 else 0)
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/popen_forkserver.py", line 65, in poll
if not wait([self.sentinel], timeout):
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/connection.py", line 931, in wait
ready = selector.select(timeout)
File "/home/im2/anaconda3/envs/gos/lib/python3.8/selectors.py", line 415, in select
fd_event_list = self._selector.poll(timeout)
KeyboardInterrupt
Traceback (most recent call last):
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/process.py", line 318, in _bootstrap
util._exit_function()
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/util.py", line 357, in _exit_function
p.join()
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/process.py", line 149, in join
res = self._popen.wait(timeout)
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/popen_fork.py", line 47, in wait
return self.poll(os.WNOHANG if timeout == 0.0 else 0)
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/popen_forkserver.py", line 65, in poll
if not wait([self.sentinel], timeout):
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/connection.py", line 931, in wait
ready = selector.select(timeout)
File "/home/im2/anaconda3/envs/gos/lib/python3.8/selectors.py", line 415, in select
fd_event_list = self._selector.poll(timeout)
KeyboardInterrupt
^CError in atexit._run_exitfuncs:
Traceback (most recent call last):
File "/home/im2/anaconda3/envs/gos/lib/python3.8/multiprocessing/connection.py", line 931, in wait
ready = selector.select(timeout)
File "/home/im2/anaconda3/envs/gos/lib/python3.8/selectors.py", line 415, in select
fd_event_list = self._selector.poll(timeout)
KeyboardInterrupt

Lastly, I want to ask is there any upgrade plans for this framework. Compared to the allenact repository, this framework may be seen as quite outdated (e.g., the ai2thor version is 0.0.1, but the current version is 5.0.0). I'd really appreciate if this is taken into consideration.

Thank you.