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Uncaught exception: TypeError: Protocols cannot be instantiated
See original GitHub issueSummary
TypeError: Protocols cannot be instantiated in 1.12.0 After upgrading from 1.11.1 to 1.12.0, streamlit server keeps raising exceptions and clients get stuck at loading page ‘please wait…’
Steps to reproduce
server error snippet:
Traceback (most recent call last):
File "/home/xx/.local/lib/python3.9/site-packages/tornado/http1connection.py", line 276, in _read_message
delegate.finish()
File "/home/xx/.local/lib/python3.9/site-packages/tornado/routing.py", line 268, in finish
self.delegate.finish()
File "/home/xx/.local/lib/python3.9/site-packages/tornado/web.py", line 2322, in finish
self.execute()
File "/home/xx/.local/lib/python3.9/site-packages/tornado/web.py", line 2344, in execute
self.handler = self.handler_class(
File "/home/xx/.local/lib/python3.9/site-packages/tornado/websocket.py", line 224, in __init__
super().__init__(application, request, **kwargs)
File "/home/xx/.local/lib/python3.9/site-packages/tornado/web.py", line 215, in __init__
super().__init__()
File "/usr/local/python3/lib/python3.9/typing.py", line 1083, in _no_init
raise TypeError('Protocols cannot be instantiated')
TypeError: Protocols cannot be instantiated
Actual behavior:
Get stuck at loading page ‘please wait…’
Debug info
- Streamlit version: 1.12.0
- Python version: 3.9.7
- Using Conda? PipEnv? PyEnv? Pex? using venv
- OS version: Debian 10
- Browser version: Chrome 104 and Safari 15
Additional information
Roll back to streamlit version 1.11.1, everything works fine.
Issue Analytics
- State:
- Created a year ago
- Reactions:5
- Comments:10
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Confirmed that upgrading from Python 3.9.7 to 3.9.12 fixes the issue! 🎉
Can confirm:
Debug info