'NoneType' object has no attribute 'closed' - Chrome 129 - Browser opens but program crashes

[ahmb]

Any assistance on this would be much appreciated !

Get this error with Chrome 130 , the browser opens but doesnt navigate to any website and the terminal has the error output

using python 3.10 + macOS

example being used:

import zendriver as uc
import asyncio

async def main():

    browser = await uc.start()
    page = await browser.get('https://www.webfunnel.ca')
    await browser.close()

if __name__ == '__main__':
    # since asyncio.run never worked (for me)
    asyncio.run(main())

also tried using browser = await uc.start(browser_args=['--headless=new'])

(base) ➜  nodriver /opt/homebrew/opt/[email protected]/bin/python3.10 example1.py
Traceback (most recent call last):
  File "/Users/Newton/Documents/code/webScraping/nodriver/example1.py", line 12, in <module>
    asyncio.run(main())
  File "/opt/homebrew/Cellar/[email protected]/3.10.15/Frameworks/Python.framework/Versions/3.10/lib/python3.10/asyncio/runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "/opt/homebrew/Cellar/[email protected]/3.10.15/Frameworks/Python.framework/Versions/3.10/lib/python3.10/asyncio/base_events.py", line 649, in run_until_complete
    return future.result()
  File "/Users/Newton/Documents/code/webScraping/nodriver/example1.py", line 6, in main
    browser = await uc.start()
  File "/opt/homebrew/lib/python3.10/site-packages/zendriver/core/util.py", line 95, in start
    return await Browser.create(config)
  File "/opt/homebrew/lib/python3.10/site-packages/zendriver/core/browser.py", line 91, in create
    await instance.start()
  File "/opt/homebrew/lib/python3.10/site-packages/zendriver/core/browser.py", line 394, in start
    await self.connection.send(cdp.target.set_discover_targets(discover=True))
  File "/opt/homebrew/lib/python3.10/site-packages/zendriver/core/connection.py", line 414, in send
    if not self.websocket or self.closed:
  File "/opt/homebrew/lib/python3.10/site-packages/zendriver/core/connection.py", line 370, in __getattr__
    return getattr(self.target, item)
AttributeError: 'NoneType' object has no attribute 'closed'
/opt/homebrew/lib/python3.10/site-packages/zendriver/core/util.py:145: RuntimeWarning: coroutine 'Browser.stop' was never awaited
  _.stop()
RuntimeWarning: Enable tracemalloc to get the object allocation traceback

[drjgouveia]

I'm currently having the exact same issue :(

[therealpurplemana]

I am seeing this on Windows machines now. My Macintosh and Ubuntu Chrome seems okay.

[drjgouveia]

@therealpurplemana it happened to me in Ubuntu

[stephanlensky]

This is due to a breaking change in websockets==14.0. Thanks @rhjsong @therealpurplemana for the tip. Related nodriver issues:

• [NODRIVER] websockets=14.0 breaks browser start ultrafunkamsterdam/undetected-chromedriver#2069
• [NODRIVER] - AttributeError: 'NoneType' object has no attribute 'aclose' ultrafunkamsterdam/undetected-chromedriver#2075

So, the solution is to keep using websockets==13.1 until we can fix the incompatibility.

I just released a new version of zendriver, 0.1.2 which pins websockets<14. If you upgrade to the latest zendriver, it should automatically downgrade your version of websockets and solve the problem.

If not, you can also try

pip install websockets==13.1

To force the downgrade.

[stephanlensky]

I created a new issue #14 for supporting the latest websockets version, but since pinning the older version fixes the crash I'll close this issue for now.

[stephanlensky]

Unrelated, but this made me realize my example code

import zendriver as uc
import asyncio

async def main():

    browser = await uc.start()
    page = await browser.get('https://www.webfunnel.ca')
    await browser.close()

if __name__ == '__main__':
    # since asyncio.run never worked (for me)
    asyncio.run(main())

is wrong, it should be

await browser.stop()

sorry about that! I just went back and fixed it in all of the docs and examples.

[ahmb]

awesome ! thanks so much for the note. I upgraded to the latest zendriver and that fixed my issue :)