"Task exception was never retrieved" upon moving mouse in browser canvas #133
Description
When running a program that uses vpython from an IDE like PyCharm, the program output spits errors when moving the mouse around the browser canvas where the vpython output is located.
I am simply using this program:
from vpython import *
a = arrow(pos=vector(1, 1, 5), color=vector(255, 52, 32))
When I run the program, a browser window opens with the arrow at the specified position. When I move my mouse around, I am spammed with errors like these (all the same error):
Task exception was never retrieved
future: <Task finished name='Task-17' coro=<WSserver.onMessage() done, defined at /home/simple/.local/lib/python3.9/site-packages/vpython/no_notebook.py:156> exception=RuntimeError("can't register atexit after shutdown")>
Traceback (most recent call last):
File "/home/simple/.local/lib/python3.9/site-packages/vpython/no_notebook.py", line 189, in onMessage
await loop.run_in_executor(None, GW.handle_msg, msg)
File "/usr/lib/python3.9/asyncio/base_events.py", line 809, in run_in_executor
executor = concurrent.futures.ThreadPoolExecutor(
File "/usr/lib/python3.9/concurrent/futures/__init__.py", line 49, in __getattr__
from .thread import ThreadPoolExecutor as te
File "/usr/lib/python3.9/concurrent/futures/thread.py", line 37, in <module>
threading._register_atexit(_python_exit)
File "/usr/lib/python3.9/threading.py", line 1370, in _register_atexit
raise RuntimeError("can't register atexit after shutdown")
RuntimeError: can't register atexit after shutdown
I saw another issue (#14) about this being related to zooming, but I figured this was a novel issue as it happens when simply moving my cursor around.
I'm running on Arch Linux, Python 3.9, PyCharm 2020.3, and Firefox 83.0.
Is this fixable?