selenium.common.exceptions.SessionNotCreatedException: Message: session not created: cannot connect to chrome at 127.0.0.1:43783

[ninjawarrior]

Hi guys. Can you please help me out Im struggling to getundetected-chromedriver to work. I have undetected-chromedriver-3.5.5 installed and Google Chrome 140.0.7339.80 installed. Are these versions compatible together?

The error I am getting is:

selenium.common.exceptions.SessionNotCreatedException: Message: session not created: cannot connect to chrome at 127.0.0.1:43783
from chrome not reachable; For documentation on this error, please visit: https://www.selenium.dev/documentation/webdriver/troubleshooting/errors#sessionnotcreatedexception

My script is as basic as it gets:

import logging
logging.basicConfig(level=10)

import undetected_chromedriver as uc

driver = uc.Chrome()

driver.get('https://google.com')
driver.quit()

This is the full logging output:

(.venv) tom@my-vps:~/newlistingnotifier$ python3 test_selenium_undetectable.py
DEBUG:undetected_chromedriver.patcher:getting release number from /last-known-good-versions-with-downloads.json
DEBUG:undetected_chromedriver.patcher:downloading from https://storage.googleapis.com/chrome-for-testing-public/140.0.7339.82/linux64/chromedriver-linux64.zip
DEBUG:undetected_chromedriver.patcher:unzipping /tmp/tmpnw8hrf03
INFO:undetected_chromedriver.patcher:patching driver executable /home/tom/.local/share/undetected_chromedriver/undetected_chromedriver
DEBUG:undetected_chromedriver.patcher:found block:
b'{window.cdc_adoQpoasnfa76pfcZLmcfl_Array = window.Array;window.cdc_adoQpoasnfa76pfcZLmcfl_Object = window.Object;window.cdc_adoQpoasnfa76pfcZLmcfl_Promise = window.Promise;window.cdc_adoQpoasnfa76pfcZLmcfl_Proxy = window.Proxy;window.cdc_adoQpoasnfa76pfcZLmcfl_Symbol = window.Symbol;window.cdc_adoQpoasnfa76pfcZLmcfl_JSON = window.JSON;window.cdc_adoQpoasnfa76pfcZLmcfl_Window = window.Window;}'
replacing with:
b'{console.log("undetected chromedriver 1337!")} '
DEBUG:undetected_chromedriver.patcher:patching took us 0.02 seconds
DEBUG:uc:created a temporary folder in which the user-data (profile) will be stored during this
session, and added it to chrome startup arguments: --user-data-dir=/tmp/tmpjr7h03sh
DEBUG:uc:checking if /bin/chromium exists and is executable
DEBUG:uc:checking if /usr/local/bin/chromium-browser exists and is executable
DEBUG:uc:checking if /usr/local/bin/chromium exists and is executable
DEBUG:uc:checking if /usr/local/games/chrome exists and is executable
DEBUG:uc:checking if /usr/bin/chromium-browser exists and is executable
DEBUG:uc:checking if /usr/bin/chromium exists and is executable
DEBUG:uc:checking if /home/tom/newlistingnotifier/.venv/bin/google-chrome-stable exists and is executable
DEBUG:uc:checking if /usr/bin/chrome exists and is executable
DEBUG:uc:checking if /usr/local/bin/google-chrome-stable exists and is executable
DEBUG:uc:checking if /usr/bin/google-chrome exists and is executable
DEBUG:uc:found! using /usr/bin/google-chrome
DEBUG:uc:did not find a bad exit_type flag
DEBUG:selenium.webdriver.common.driver_finder:Skipping Selenium Manager; path to chrome driver specified in Service class: /home/tom/.local/share/undetected_chromedriver/undetected_chromedriver
DEBUG:selenium.webdriver.common.service:Started executable: /home/tom/.local/share/undetected_chromedriver/undetected_chromedriver in a child process with pid: 101656 using 0 to output -3
DEBUG:selenium.webdriver.remote.remote_connection:POST http://localhost:49045/session {'capabilities': {'firstMatch': [{}], 'alwaysMatch': {'browserName': 'chrome', 'pageLoadStrategy': <PageLoadStrategy.normal: 'normal'>, 'goog:chromeOptions': {'extensions': [], 'binary': '/usr/bin/google-chrome', 'args': ['--remote-debugging-host=127.0.0.1', '--remote-debugging-port=37969', '--user-data-dir=/tmp/tmpjr7h03sh', '--lang=en-US', '--no-default-browser-check', '--no-first-run', '--no-sandbox', '--test-type', '--window-size=1920,1080', '--start-maximized', '--no-sandbox', '--log-level=0'], 'debuggerAddress': '127.0.0.1:37969'}}}}
DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): localhost:49045
DEBUG:urllib3.connectionpool:http://localhost:49045 "POST /session HTTP/1.1" 500 0
DEBUG:selenium.webdriver.remote.remote_connection:Remote response: status=500 | data={"value":{"error":"session not created","message":"session not created: cannot connect to chrome at 127.0.0.1:37969\nfrom chrome not reachable","stacktrace":"#0 0x56397ce2294a \u003Cunknown>\n#1 0x56397c8976f3 \u003Cunknown>\n#2 0x56397c8839b6 \u003Cunknown>\n#3 0x56397c8d728c \u003Cunknown>\n#4 0x56397c8ccb49 \u003Cunknown>\n#5 0x56397c91d386 \u003Cunknown>\n#6 0x56397c91ca56 \u003Cunknown>\n#7 0x56397c90ee03 \u003Cunknown>\n#8 0x56397c8db968 \u003Cunknown>\n#9 0x56397c8dc5e1 \u003Cunknown>\n#10 0x56397cde6548 \u003Cunknown>\n#11 0x56397cdea272 \u003Cunknown>\n#12 0x56397cdcd313 \u003Cunknown>\n#13 0x56397cdeadc5 \u003Cunknown>\n#14 0x56397cdb249f \u003Cunknown>\n#15 0x56397ce0f158 \u003Cunknown>\n#16 0x56397ce0f332 \u003Cunknown>\n#17 0x56397ce21a53 \u003Cunknown>\n#18 0x7f37b404b1f5 \u003Cunknown>\n"}} | headers=HTTPHeaderDict({'Content-Length': '816', 'Content-Type': 'application/json; charset=utf-8', 'cache-control': 'no-cache'})
DEBUG:selenium.webdriver.remote.remote_connection:Finished Request
DEBUG:uc:webdriver process ended
DEBUG:uc:gracefully closed browser
DEBUG:uc:successfully removed /tmp/tmpjr7h03sh
Traceback (most recent call last):
File "/home/tom/newlistingnotifier/test_selenium_undetectable.py", line 6, in
driver = uc.Chrome()
^^^^^^^^^^^
File "/home/tom/newlistingnotifier/.venv/lib/python3.11/site-packages/undetected_chromedriver/init.py", line 466, in init
super(Chrome, self).init(
File "/home/tom/newlistingnotifier/.venv/lib/python3.11/site-packages/selenium/webdriver/chrome/webdriver.py", line 47, in init
super().init(
File "/home/tom/newlistingnotifier/.venv/lib/python3.11/site-packages/selenium/webdriver/chromium/webdriver.py", line 69, in init
super().init(command_executor=executor, options=options)
File "/home/tom/newlistingnotifier/.venv/lib/python3.11/site-packages/selenium/webdriver/remote/webdriver.py", line 263, in init
self.start_session(capabilities)
File "/home/tom/newlistingnotifier/.venv/lib/python3.11/site-packages/undetected_chromedriver/init.py", line 724, in start_session
super(selenium.webdriver.chrome.webdriver.WebDriver, self).start_session(
File "/home/tom/newlistingnotifier/.venv/lib/python3.11/site-packages/selenium/webdriver/remote/webdriver.py", line 366, in start_session
response = self.execute(Command.NEW_SESSION, caps)["value"]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/tom/newlistingnotifier/.venv/lib/python3.11/site-packages/selenium/webdriver/remote/webdriver.py", line 458, in execute
self.error_handler.check_response(response)
File "/home/tom/newlistingnotifier/.venv/lib/python3.11/site-packages/selenium/webdriver/remote/errorhandler.py", line 232, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.SessionNotCreatedException: Message: session not created: cannot connect to chrome at 127.0.0.1:37969
from chrome not reachable; For documentation on this error, please visit: https://www.selenium.dev/documentation/webdriver/troubleshooting/errors#sessionnotcreatedexception
Stacktrace:
#0 0x56397ce2294a
#1 0x56397c8976f3
#2 0x56397c8839b6
#3 0x56397c8d728c
#4 0x56397c8ccb49
#5 0x56397c91d386
#6 0x56397c91ca56
#7 0x56397c90ee03
#8 0x56397c8db968
#9 0x56397c8dc5e1
#10 0x56397cde6548
#11 0x56397cdea272
#12 0x56397cdcd313
#13 0x56397cdeadc5
#14 0x56397cdb249f
#15 0x56397ce0f158
#16 0x56397ce0f332
#17 0x56397ce21a53
#18 0x7f37b404b1f5

INFO:uc:ensuring close
DEBUG:uc:webdriver process ended

Could anyone please shed some light on this for me its driving me mad

[entrupy-vishnu]

Hi, is this happening because of the version mismatch between chrome browser and chrome driver? Did you try downgrading the chrome browser?

[ninjawarrior]

Hi Entrupy. I dont believe so because the normal selenium php library works fine with google chrome and the chrome driver I am using there is no match. It seems like the only problem must be the undetected chromedriver patcher doesnt support this crome/driver version.

So I pose the question, what is the latest known linux google chrome / chrome driver that works with the latest undetected-selenium library?

Thanks in advance!

[ninjawarrior]

Seleniumbase fork of undetect-chromedriver seems to to work well so I'll use for now. Thanks!

[LinusDarkrow]

I have similar problem and I don't know how can fix it...
Today I tried using undetected-chromedriver instead of selenium. And this is not working :)

[entrupy-vishnu]

Try switching to Seleniumbase instead, it has a UC mode too