[Python] Python asyncio/Telethon script suddenly stopped working after VSCode restart (Python...

I have a Python script using asyncio (for Telethon) and until recently, it was running just fine in a Terminal inside VSCode.

However, an extension install prompted a VSCode restart and now I can't get my code to run anymore, even though the code files themselves haven't changed.

It seems that Telethon fails to initialise, and the problem doesn't seem to be with the Telethon database file, as I also tried renaming the DB file and starting my code which leads to the same error message.

I tried updating Telethon using pip, but the error remains.

The error I'm getting is:

Traceback (most recent call last):
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/selector_events.py", line 261, in _add_reader
key = self._selector.get_key(fd)
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/selectors.py", line 193, in get_key
raise KeyError("{!r} is not registered".format(fileobj)) from None
KeyError: '6 is not registered'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Users/sora/Documents/*******/*******-scraper-redeemer-dist.py", line 36, in <module>
client = TelegramClient("*******-scraper", api_id, api_hash)
File "/Users/sora/Library/Python/3.9/lib/python/site-packages/telethon/client/telegrambaseclient.py", line 339, in __init__
if not callable(getattr(self.loop, 'sock_connect', None)):
File "/Users/sora/Library/Python/3.9/lib/python/site-packages/telethon/client/telegrambaseclient.py", line 488, in loop
return helpers.get_running_loop()
File "/Users/sora/Library/Python/3.9/lib/python/site-packages/telethon/helpers.py", line 432, in get_running_loop
return asyncio.get_event_loop_policy().get_event_loop()
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/events.py", line 639, in get_event_loop
self.set_event_loop(self.new_event_loop())
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/events.py", line 659, in new_event_loop
return self._loop_factory()
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/unix_events.py", line 54, in __init__
super().__init__(selector)
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/selector_events.py", line 61, in __init__
self._make_self_pipe()
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/selector_events.py", line 112, in _make_self_pipe
self._add_reader(self._ssock.fileno(), self._read_from_self)
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/selector_events.py", line 263, in _add_reader
self._selector.register(fd, selectors.EVENT_READ,
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/selectors.py", line 523, in register
self._selector.control([kev], 0, 0)
TypeError: changelist must be an iterable of select.kevent objects
Exception ignored in: <function BaseEventLoop.__del__ at 0x103a88ee0>
Traceback (most recent call last):
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/base_events.py", line 683, in __del__
self.close()
File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/unix_events.py", line 63, in close
if self._signal_handlers:
AttributeError: '_UnixSelectorEventLoop' object has no attribute '_signal_handlers'


Maybe some of you have experienced this error before and can help me pinpoint the problem.

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