could you tell me how to deal with this problem

Traceback (most recent call last):
File "explorer.py", line 54, in
Explorer(**args).show()
File "explorer.py", line 14, in __init__
self.env.reset()
File "/home/zy/reproduce/visual-navigation-agent-pytorch-master_2/agent/environment/thor.py", line 23, in reset
self._initialize()
File "/home/zy/reproduce/visual-navigation-agent-pytorch-master_2/agent/environment/thor.py", line 16, in _initialize
self.controller.start()
File "/home/zy/anaconda3/envs/yourEnv/lib/python3.7/site-packages/ai2thor/controller.py", line 1226, in start
self.server.start()
File "/home/zy/anaconda3/envs/yourEnv/lib/python3.7/site-packages/ai2thor/fifo_server.py", line 202, in start
os.mkfifo(self.server_pipe_path)
FileExistsError: [Errno 17] File exists