RuntimeError: asyncio.get_child_watcher() is not activated, subprocess support is not installed.

[niranjan131]

Getting issue when pyshark tried to parse pcap in multi thread in linux environment.

Kindly suggest how to resolve the issue please.

Traceback (most recent call last):
File "/home/ganjinir/project/keywords/parse_pcap.py", line 1280, in parse_pcap
streamInfo = list(executor.map(lambda f: gethttp2pcapinfo(file, f), filters))
File "/usr/lib/python3.8/concurrent/futures/_base.py", line 619, in result_iterator
yield fs.pop().result()
File "/usr/lib/python3.8/concurrent/futures/_base.py", line 444, in result
return self.__get_result()
File "/usr/lib/python3.8/concurrent/futures/_base.py", line 389, in __get_result
raise self._exception
File "/usr/lib/python3.8/concurrent/futures/thread.py", line 57, in run
result = self.fn(*self.args, **self.kwargs)
File "/home/ganjinir/project/keywords/parse_pcap.py", line 1280, in
streamInfo = list(executor.map(lambda f: gethttp2pcapinfo(file, f), filters))
File "/home/ganjinir/project/keywords/parse_pcap.py", line 351, in gethttp2pcapinfo
for packet in cap:
File "/home/ganjinir/regenv/lib/python3.8/site-packages/pyshark/capture/capture.py", line 212, in _packets_from_tshark_sync
tshark_process = existing_process or self.eventloop.run_until_complete(
File "/usr/lib/python3.8/asyncio/base_events.py", line 616, in run_until_complete
return future.result()
File "/home/ganjinir/regenv/lib/python3.8/site-packages/pyshark/capture/capture.py", line 346, in _get_tshark_process
tshark_process = await asyncio.create_subprocess_exec(*parameters,
File "/usr/lib/python3.8/asyncio/subprocess.py", line 236, in create_subprocess_exec
transport, protocol = await loop.subprocess_exec(
File "/usr/lib/python3.8/asyncio/base_events.py", line 1630, in subprocess_exec
transport = await self._make_subprocess_transport(
File "/usr/lib/python3.8/asyncio/unix_events.py", line 194, in _make_subprocess_transport
raise RuntimeError("asyncio.get_child_watcher() is not activated, "
RuntimeError: asyncio.get_child_watcher() is not activated, subprocess support is not installed.