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Program stuck in fifo_server.py

See original GitHub issue

I just installed the ai2thor package and tried running the minimal example as suggested in the Readme.md. However I run into this problem where the program is trapped in the fifo_server.py file.

Traceback (most recent call last):
File "test.py", line 2, in <module>
    controller = Controller(scene="FloorPlan10")
  File "/home/siteng/anaconda3/envs/thor/lib/python3.6/site-packages/ai2thor/controller.py", line 476, in __init__
    host=host,
  File "/home/siteng/anaconda3/envs/thor/lib/python3.6/site-packages/ai2thor/controller.py", line 1237, in start
    self.last_event = self.server.receive()
  File "/home/siteng/anaconda3/envs/thor/lib/python3.6/site-packages/ai2thor/fifo_server.py", line 179, in receive
    metadata, files = self._recv_message()
  File "/home/siteng/anaconda3/envs/thor/lib/python3.6/site-packages/ai2thor/fifo_server.py", line 103, in _recv_message
    self.server_pipe = open(self.server_pipe_path, "rb")

I understand that this issue has been brought up before but even after applying the fixed mentioned here I simply end up getting another error message.

Traceback (most recent call last):
  File "test.py", line 4, in <module>
    controller = Controller(scene="FloorPlan10", server_class=ai2thor.wsgi_server.WsgiServer)
  File "/home/siteng/anaconda3/envs/thor/lib/python3.6/site-packages/ai2thor/controller.py", line 476, in __init__
    host=host,
  File "/home/siteng/anaconda3/envs/thor/lib/python3.6/site-packages/ai2thor/controller.py", line 1237, in start
    self.last_event = self.server.receive()
  File "/home/siteng/anaconda3/envs/thor/lib/python3.6/site-packages/ai2thor/wsgi_server.py", line 264, in receive
    return queue_get(self.request_queue, unity_proc=self.unity_proc)
  File "/home/siteng/anaconda3/envs/thor/lib/python3.6/site-packages/ai2thor/wsgi_server.py", line 46, in queue_get
    raise Exception("Unity process exited %s" % unity_proc.returncode)
Exception: Unity process exited 1

System and program info: