I have a qustion for py-tpcc

[gaggki]

I encountered an error while doing mongoDB tpcc：
Traceback (most recent call last):
File "tpcc.py", line 303, in
results = startExecution(driverClass, scaleParameters, globalResults, args, config)
File "tpcc.py", line 151, in startExecution
r = asyncr.get()
File "/usr/lib64/python2.7/multiprocessing/pool.py", line 554, in get
raise self._value
AssertionError: Didn't find self in running
Process resultWatcher:
Traceback (most recent call last):
File "/usr/lib64/python2.7/multiprocessing/process.py", line 258, in _bootstrap
self.run()
File "/usr/lib64/python2.7/multiprocessing/process.py", line 114, in run
self._target(*self._args, **self._kwargs)
File "tpcc.py", line 185, in resultWatcher
globalResults.stopBenchmark()
File "", line 2, in stopBenchmark
File "/usr/lib64/python2.7/multiprocessing/managers.py", line 758, in _callmethod
conn.send((self._id, methodname, args, kwds))
IOError: [Errno 32] Broken pipe

MongoDB version：4.4.18