/Python/Asyncio\events.py", line 504, in add_reader raise NotImplementedError

Asyncio\events.py", line 504, in add_reader raise NotImplementedError

# Edit C:\Users\[username]\AppData\Local\Programs\Python\Python39\Lib\site-packages\tornado\platform\asyncio.py
# Add the below code and it will work. May need to change Python39 to your version i.e Python 3.8 == Python38

import sys
if sys.platform == 'win32':
    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())

Source: stackoverflow.com

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