EOFError BrokenPipeError: [WinError 109]

[tsinghuazl22]

Traceback (most recent call last):
File "D:\Anaconda3\envs\testenv\lib\multiprocessing\process.py", line 258, in _bootstrap
self.run()
File "F:\aa_maml\MAML-Pytorch-RL-master\maml_rl\envs\subproc_vec_env.py", line 61, in run
command, data = self.remote.recv()
File "D:\Anaconda3\envs\testenv\lib\multiprocessing\connection.py", line 312, in _recv_bytes
nread, err = ov.GetOverlappedResult(True)
File "D:\Anaconda3\envs\testenv\lib\multiprocessing\connection.py", line 250, in recv
buf = self._recv_bytes()
File "D:\Anaconda3\envs\testenv\lib\multiprocessing\connection.py", line 321, in _recv_bytes
raise EOFError
EOFError
BrokenPipeError: [WinError 109]

I run the code on win10 but this error occurred.