OS: Ubuntu 16.04.3 LTS (GNU/Linux 4.4.0-1066-aws x86_64)
Selenium Version: selenium==3.6.0
Browser: Mozilla Firefox 63.0
Geckodriver version : geckodriver-v0.19.0-linux64
Expected Behavior -
Create a new firefox browser and do some steps - parsing the website.
Actual Behavior -
Crashing with a log :-
self.driver = webdriver.Firefox()
File "/home/ubuntu/env/local/lib/python2.7/site-packages/selenium/webdriver/firefox/webdriver.py", line 154, in __init__
keep_alive=True)
File "/home/ubuntu/env/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 151, in __init__
self.start_session(desired_capabilities, browser_profile)
File "/home/ubuntu/env/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 240, in start_session
response = self.execute(Command.NEW_SESSION, parameters)
File "/home/ubuntu/env/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 308, in execute
self.error_handler.check_response(response)
File "/home/ubuntu/env/local/lib/python2.7/site-packages/selenium/webdriver/remote/errorhandler.py", line 194, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: newSession
Has anyone faced this issue before and has a possible solution ?
UPDATE :
Ran the following command : geckodriver --log trace & curl -d '{}' 127.0.0.1:4444/session
Log :-
https://pastebin.com/TirTNKrG
I fixed the issue by updating the selenium python package and using the latest geckodriver.
Thanks #fzbd for all your help.
Additional context -
Refer to the compatibility chart here - https://firefox-source-docs.mozilla.org/testing/geckodriver/Support.html#supported-platforms
update selenium :
pip install -U selenium
update geckodriver (choose the correct version for your needs based on the above compatibility chart)
Check the versions for all components -
firefox -v
geckodriver -V
pip freeze | grep selenium
Thanks #skyfail.
Your answer helped me.
The following sequence was performed and resolved the issue.
To upgrade selenium run: sudo pip3 install selenium --upgrade
To upgrade geckodriver follow steps 1-3 from this
sudo mv geckodriver /usr/local/bin/geckodriver , /usr/local/bin is usually in your PATH so no need to edit it.
In your log is the following line:
1540501901605 geckodriver ERROR Address in use (os error 98)
Which indicates that the driver is trying to use a port which is already used by some other process. Since the log doesn't show which port it is, you can run the driver with strace:
strace geckodriver 2>&1 | grep -iE 'bind|getsockname'
In my case I get these lines:
bind(3, {sa_family=AF_INET, sin_port=htons(4444), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
getsockname(3, {sa_family=AF_INET, sin_port=htons(4444), sin_addr=inet_addr("127.0.0.1")}, [128->16]) = 0
You can then check which process is using the port (for example):
netstat -tulpn | grep -i 4444
In my case returning:
tcp 0 0 127.0.0.1:4444 0.0.0.0:* LISTEN 31471/geckodriver
According to a issue about geckodriver port logging, you can let the os allocate a free port:
geckodriver --port 0
If all this doesn't work out, there may an incompatibility between your version of geckodriver and selenium, as this error in the log seems to suggest:
geckodriver::marionette TRACE <- [1,1,{"error":"unknown command","message":"newSession","stacktrace":"WebDriverError#chrome://marionette/content/error.js:178:5
I am using the following versions:
firefox 62.0.3
geckodriver 0.23.0
selenium 3.14.1
Related
Server: Raspberry Pi 3
OS: Dietpi - version 159
Geckodriver version: 0.22 for arm
Firefox version: 52.9.0
Python version: 3.5
Selenium version: 3.14.1
Gecko is executable, and is located in /usr/local/bin/
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.firefox.options import Options
import time
options = Options()
options.set_headless(headless=True)
driver = webdriver.Firefox(firefox_options=options)
print('Need your login credential')
username = input('What is your username?:\n')
password = input('What is your password?:\n')
...
...
Output:
root#RPi3:~# python3.5 ITE-bot.py
Traceback (most recent call last):
File "ITE-bot.py", line 12, in <module>
driver = webdriver.Firefox(firefox_options=options)
File "/usr/local/lib/python3.5/dist-packages/selenium/webdriver/firefox/webdriver.py", line 174, in __init__
keep_alive=True)
File "/usr/local/lib/python3.5/dist-packages/selenium/webdriver/remote/webdriver.py", line 157, in __init__
self.start_session(capabilities, browser_profile)
File "/usr/local/lib/python3.5/dist-packages/selenium/webdriver/remote/webdriver.py", line 252, in start_session
response = self.execute(Command.NEW_SESSION, parameters)
File "/usr/local/lib/python3.5/dist-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
self.error_handler.check_response(response)
File "/usr/local/lib/python3.5/dist-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: invalid argument: can't kill an exited process
Any idea what is wrong? I've tried google without luck.
If you are running Firefox on a system with no display, make sure you use headless mode.
from selenium import webdriver
from selenium.webdriver.firefox.options import Options
options = Options()
options.headless = True
driver = webdriver.Firefox(options=options)
Also, make sure you have compatible versions of Firefox, Selenium, and Geckodriver:
https://firefox-source-docs.mozilla.org/testing/geckodriver/Support.html
Thumb rule
A common cause for Browsers to crash during startup is running WebDriver initiated Browsers as root user (administrator) on Linux. While it is possible to work around this issue by passing --no-sandbox flag when creating your WebDriver session, such a configuration is unsupported and highly discouraged. You need to configure your environment to run Browser as a regular user instead.
This error message...
selenium.common.exceptions.WebDriverException: Message: invalid argument: can't kill an exited process
...implies that the GeckoDriver was unable to initiate/spawn a new WebBrowsing Session i.e. Firefox Browser session.
Your main issue is the incompatibility between the version of the binaries you are using as follows:
Your GeckoDriver version is 0.22.0.
Release Notes of GeckoDriver v0.21.0 (2018-06-15) clearly mentions the following:
Firefox 57 (and greater)
Selenium 3.11 (and greater)
Your Firefox version is 52.9.0.
So there is a clear mismatch between GeckoDriver v0.22.0 and the Firefox Browser v57
Solution
Upgrade GeckoDriver to GeckoDriver v0.22.0 level.
GeckoDriver is present in the specified location.
GeckoDriver is having executable permission for non-root users.
Upgrade Firefox version to Firefox v62.0.2 levels.
Clean your Project Workspace through your IDE and Rebuild your project with required dependencies only.
If your base Web Client version is too old, then uninstall it through Revo Uninstaller and install a recent GA and released version of Web Client.
Execute your Selenium Test as a non-root user.
GeckoDriver, Selenium and Firefox Browser compatibility chart
I was on headless mode, using correct versions of everything, and the only way to get out of this error message was not to execute the selenium test as root
Yes checked Start Xvfb before the build can fix the problem, but if you have a job like a pipeline or multibranch pipeline this option is not visible. In the node of your Selenium grid that you go to execute the test you need:
1- Install Xvfb: apt install xvfb
2- Execute Xvfb: /usr/bin/Xvfb :99 -ac -screen 0 1024x768x8 & export DISPLAY=":99"
3- Rerun your node, for example: java -jar selenium.jar -role node -hub http://#.#.#.#:4444/grid/register -capabilities browserName=firefox,plataform=linux -host #.#.#.# -port 1991
This solution worked for me
from selenium import webdriver
from selenium.webdriver.firefox.options import Options
options = Options()
options.headless = True
driver = webdriver.Firefox(options=options)
As there can be many different underlying causes for this error it is best to find the root cause setting selenium to use debug level logging. In my case, for Ruby with capybara I needed to set: Selenium::WebDriver.logger.level = :debug. And voilà, running the same spec I could see in the logs that a dependency was missing, in my case:
libdbus-glib-1.so.2: cannot open shared object file: No such file or directory
Couldn't load XPCOM.
After installing it all worked fine.
I used:
VS Code
Linunx/Ubuntu:18.10
Nightwatch.js
My problem was that I tried to run Nightwatch (which automatically starts GeckoDriver) from the VS Code terminal.
I had the same problem, and realized that the real problem was some firefox dependencies not being installed inside the docker container I was testing in.
Try to initiate firefox and check if it returns an error.
As Nico and jay have stated you need to check the logs to see the details of the error. As you might use different systems, you can specify the path where the log is stored (i.e. "/tmp/geckodriver.log").
from selenium import webdriver
firefox_options = webdriver.firefox.webdriver.Options()
driver = webdriver.Firefox(log_path="/tmp/geckodriver.log",
options=firefox_options)
In my particular case, what the log said was:
Error: no DISPLAY environment variable specified
That was resolved adding in the options the headless mode before starting the driver. With the line:
firefox_options.set_headless()
I was able to fix this by running my tests with Xvfb. I was running them on a remote server.
I was using Jenkins so I checked the box that looked like this:
Credit to https://www.obeythetestinggoat.com/book/chapter_CI.html
in my case, I was running test cases as root
geckodriver.log
1576076416677 mozrunner::runner INFO Running command: "/usr/bin/firefox" "-marionette" "-foreground" "-no-remote" "-profile" "/tmp/rust_mozprofilenCbl2e"
Running Firefox as root in a regular user's session is not supported. ($HOME is /home/seluser which is owned by seluser.)
1576077143004 mozrunner::runner INFO Running command: "/usr/bin/firefox" "-marionette" "-foreground" "-no-remote" "-profile" "/tmp/rust_mozprofile7wpSQ7"
1576077143689 addons.webextension.screenshots#mozilla.org WARN Loading extension 'screenshots#mozilla.org': Reading manifest: Invalid extension permission: mozillaAddons
1576077143689 addons.webextension.screenshots#mozilla.org WARN Loading extension 'screenshots#mozilla.org': Reading manifest: Invalid extension permission: telemetry
1576077143689 addons.webextension.screenshots#mozilla.org WARN Loading extension 'screenshots#mozilla.org': Reading manifest: Invalid extension permission: resource://pdf.js/
1576077143689 addons.webextension.screenshots#mozilla.org WARN Loading extension 'screenshots#mozilla.org': Reading manifest: Invalid extension permission: about:reader*
1576077145372 Marionette INFO Listening on port 35571
1576077145423 Marionette WARN TLS certificate errors will be ignored for this session
1576077200207 mozrunner::runner INFO Running command: "/usr/bin/firefox" "-marionette" "-foreground" "-no-remote" "-profile" "/tmp/rust_mozprofilenhoHlr"
Running Firefox as root in a regular user's session is not supported. ($HOME is /home/seluser which is owned by seluser.)
i could get around by
cd /home
chown -R root seluser
i woundnt say its correct but it got my job done
I have a script which uses selenium for testing. Now even opening a Google page using
driver.get(url) # url = Google homepage url
is giving me below error
driver.get("https://my.gumtree.com/login")
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 245, in get
self.execute(Command.GET, {'url': url})
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 233, in execute
self.error_handler.check_response(response)
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 194, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: cannot determine loading status
from unknown error: missing or invalid 'entry.level'
(Session info: chrome=65.0.3315.3)
(Driver info: chromedriver=2.29.461591 (62ebf098771772160f391d75e589dc567915b233),platform=Windows NT 10.0.16299 x86_64)
I have Google chrome version 65, Chromedriver 2.35 and selenium 2.53.1
I tried different version combinations(mentioned in below table) as per solutions mentioned in other similar questions but nothing worked.
Selenium Chrome Chromedriver
2.53.0 63 2.33
2.53.1 65(latest) 2.34
3.6.0 2.35(latest)
3.7.0
3.8.0
3.8.1(latest)
EDIT 1: JDK version
java version "1.8.0_151"
Java(TM) SE Runtime Environment (build 1.8.0_151-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)
The error says it all :
selenium.common.exceptions.WebDriverException: Message: unknown error: cannot determine loading status
from unknown error: missing or invalid 'entry.level'
Your main issue is the version compatibility among the binaries you are using as follows :
You are using chromedriver=2.29.461591 (which is as per the logs, though you mentioned Chromedriver 2.35 in your question)
Release Notes of chromedriver=2.29.461591 clearly mentions the following :
Supports Chrome v56-58
You are using chrome=65.0.3315.3
Release Notes of chromedriver=2.35 clearly mentions the following :
Supports Chrome v62-64
You are using Selenium Version 2.53.1.
Your JDK version is unknown to us.
Solution
Upgrade JDK to recent levels JDK Version 8 Update 151.
Upgrade ChromeDriver to ChromeDriver v2.35 level.
Keep Chrome to Chrome v64.x levels. (as per ChromeDriver v2.35 release notes)
Upgrade Selenium to current levels Version 3.8.1.
Clean the Project Workspace from your IDE & Rebuild All.
Run CCleaner tool to wipe off all the OS chores.
If your Chrome base version is too old, uninstall Chrome through Revo Uninstaller and install a recent GA Release version of Chrome.
Take a System Reboot.
Execute your Test.
Go to http://chromedriver.chromium.org/downloads
copy the download link according to your OS
wget -N paste_the_link_you_copied
unzip it using below command
unzip chromedriver_linux64.zip
Give the permission by the below command
chmod +x chromedriver
Then follow the below commands, if it says already exists (probabily old version) then go to that path (/usr/local/bin/chromedriver and /usr/bin/chromedriver) and delete chromedriver and run the commands again
sudo mv -f chromedriver /usr/local/share/chromedriver
sudo ln -s /usr/local/share/chromedriver /usr/local/bin/chromedriver
sudo ln -s /usr/local/share/chromedriver /usr/bin/chromedriver
Hope this helps. Thanks
That error raised beacuse your chrome browser is not compatible with the web driver. If you are using Linux, then simply execute the following command.
sudo apt-get update
Recently I am facing the same problem and take me too much time to figure out what's going on, in my situation facing the problem, I did not close the chrome process after using it, so you should check the process exit or not when you exit the app, this is my last worked Python 3 code demo, hope it will help others:
#staticmethod
def fetch_music_download_url(music_name: str):
chrome_driver_service = Service(ChromeDriverManager(chrome_type=ChromeType.GOOGLE).install())
chrome_options = Options()
chrome_options.add_argument("--no-sandbox")
chrome_options.add_argument("--headless")
chrome_options.add_argument("--disable-gpu")
chrome_options.add_argument("--remote-debugging-port=9230")
driver = webdriver.Chrome(service=chrome_driver_service,
options=chrome_options,
executable_path="/usr/local/bin/chromedriver")
try:
driver.maximize_window()
driver.get('http://tool.example.cn/music/?page=audioPage&type=migu&name=' + music_name)
driver.implicitly_wait(5)
driver.find_element(By.CSS_SELECTOR, ".aplayer-list-download.iconfont.icon-xiazai").click()
urls = [a.get_attribute('href') for a in
driver.execute_script('return document.querySelectorAll(".modal-body a[href*=\'http\']")')]
for url in urls:
if "listenSong.do" in url:
logger.info("fetched url:" + url)
FetchMusic.do_save_music_download_url(url)
except Exception as e:
logger.error("scrapy impl error", e)
finally:
driver.stop_client()
driver.close()
driver.quit()
chrome_driver_service.stop()
I have a script which uses selenium for testing. Now even opening a Google page using
driver.get(url) # url = Google homepage url
is giving me below error
driver.get("https://my.gumtree.com/login")
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 245, in get
self.execute(Command.GET, {'url': url})
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 233, in execute
self.error_handler.check_response(response)
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 194, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: cannot determine loading status
from unknown error: missing or invalid 'entry.level'
(Session info: chrome=65.0.3315.3)
(Driver info: chromedriver=2.29.461591 (62ebf098771772160f391d75e589dc567915b233),platform=Windows NT 10.0.16299 x86_64)
I have Google chrome version 65, Chromedriver 2.35 and selenium 2.53.1
I tried different version combinations(mentioned in below table) as per solutions mentioned in other similar questions but nothing worked.
Selenium Chrome Chromedriver
2.53.0 63 2.33
2.53.1 65(latest) 2.34
3.6.0 2.35(latest)
3.7.0
3.8.0
3.8.1(latest)
EDIT 1: JDK version
java version "1.8.0_151"
Java(TM) SE Runtime Environment (build 1.8.0_151-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)
The error says it all :
selenium.common.exceptions.WebDriverException: Message: unknown error: cannot determine loading status
from unknown error: missing or invalid 'entry.level'
Your main issue is the version compatibility among the binaries you are using as follows :
You are using chromedriver=2.29.461591 (which is as per the logs, though you mentioned Chromedriver 2.35 in your question)
Release Notes of chromedriver=2.29.461591 clearly mentions the following :
Supports Chrome v56-58
You are using chrome=65.0.3315.3
Release Notes of chromedriver=2.35 clearly mentions the following :
Supports Chrome v62-64
You are using Selenium Version 2.53.1.
Your JDK version is unknown to us.
Solution
Upgrade JDK to recent levels JDK Version 8 Update 151.
Upgrade ChromeDriver to ChromeDriver v2.35 level.
Keep Chrome to Chrome v64.x levels. (as per ChromeDriver v2.35 release notes)
Upgrade Selenium to current levels Version 3.8.1.
Clean the Project Workspace from your IDE & Rebuild All.
Run CCleaner tool to wipe off all the OS chores.
If your Chrome base version is too old, uninstall Chrome through Revo Uninstaller and install a recent GA Release version of Chrome.
Take a System Reboot.
Execute your Test.
Go to http://chromedriver.chromium.org/downloads
copy the download link according to your OS
wget -N paste_the_link_you_copied
unzip it using below command
unzip chromedriver_linux64.zip
Give the permission by the below command
chmod +x chromedriver
Then follow the below commands, if it says already exists (probabily old version) then go to that path (/usr/local/bin/chromedriver and /usr/bin/chromedriver) and delete chromedriver and run the commands again
sudo mv -f chromedriver /usr/local/share/chromedriver
sudo ln -s /usr/local/share/chromedriver /usr/local/bin/chromedriver
sudo ln -s /usr/local/share/chromedriver /usr/bin/chromedriver
Hope this helps. Thanks
That error raised beacuse your chrome browser is not compatible with the web driver. If you are using Linux, then simply execute the following command.
sudo apt-get update
Recently I am facing the same problem and take me too much time to figure out what's going on, in my situation facing the problem, I did not close the chrome process after using it, so you should check the process exit or not when you exit the app, this is my last worked Python 3 code demo, hope it will help others:
#staticmethod
def fetch_music_download_url(music_name: str):
chrome_driver_service = Service(ChromeDriverManager(chrome_type=ChromeType.GOOGLE).install())
chrome_options = Options()
chrome_options.add_argument("--no-sandbox")
chrome_options.add_argument("--headless")
chrome_options.add_argument("--disable-gpu")
chrome_options.add_argument("--remote-debugging-port=9230")
driver = webdriver.Chrome(service=chrome_driver_service,
options=chrome_options,
executable_path="/usr/local/bin/chromedriver")
try:
driver.maximize_window()
driver.get('http://tool.example.cn/music/?page=audioPage&type=migu&name=' + music_name)
driver.implicitly_wait(5)
driver.find_element(By.CSS_SELECTOR, ".aplayer-list-download.iconfont.icon-xiazai").click()
urls = [a.get_attribute('href') for a in
driver.execute_script('return document.querySelectorAll(".modal-body a[href*=\'http\']")')]
for url in urls:
if "listenSong.do" in url:
logger.info("fetched url:" + url)
FetchMusic.do_save_music_download_url(url)
except Exception as e:
logger.error("scrapy impl error", e)
finally:
driver.stop_client()
driver.close()
driver.quit()
chrome_driver_service.stop()
I am running python 2.7.12 with selenium version 2.53.6 and firefox 46.0.1. My goal is to run headless tests on an AWS Ubuntu Server 16.04 LTS. This is how I have set it up.
# install anaconda
cd ~
wget https://repo.continuum.io/archive/Anaconda2-4.2.0-Linux-x86_64.sh
bash Anaconda2-4.2.0-Linux-x86_64.sh
rm Anaconda2-4.2.0-Linux-x86_64.sh
echo export 'PATH="/home/ubuntu/anaconda2/bin:$PATH"' >> ~/.bashrc
source .bashrc
conda update conda
# install firefox version 46.0.1
wget https://ftp.mozilla.org/pub/firefox/releases/46.0.1/linux-x86_64/en-US/firefox-46.0.1.tar.bz2
tar jxf firefox-46.0.1.tar.bz2
rm firefox-46.0.1.tar.bz2
# install pyvirtualdisplay
sudo apt-get install xvfb xserver-xephyr
pip install pyvirtualdisplay
# install selenium version 2.53.6
pip install selenium==2.53.6
When I run this code
from pyvirtualdisplay import Display
from selenium import webdriver
display = Display(visible=0, size=(1024, 768))
display.start()
browser = webdriver.Firefox()
driver.get("http://www.python.org")
driver.quit()
display.stop()
I get this error:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/ubuntu/anaconda2/lib/python2.7/site-packages/selenium/webdriver/firefox/webdriver.py", line 55, in __init__
self.binary = firefox_binary or capabilities.get("binary", FirefoxBinary())
File "/home/ubuntu/anaconda2/lib/python2.7/site-packages/selenium/webdriver/firefox/firefox_binary.py", line 47, in __init__
self._start_cmd = self._get_firefox_start_cmd()
File "/home/ubuntu/anaconda2/lib/python2.7/site-packages/selenium/webdriver/firefox/firefox_binary.py", line 163, in _get_firefox_start_cmd
" Please specify the firefox binary location or install firefox")
RuntimeError: Could not find firefox in your system PATH. Please specify the firefox binary location or install firefox
I've tried to add a link to firefox in the bash profile by running echo export 'PATH="$PATH:/home/ubuntu/firefox"' >> ~/.bashrc but that did not fix the issue.
UPDATE
I was able to successfully add the path to my bash profile. I am now getting this error
"The browser appears to have exited "
selenium.common.exceptions.WebDriverException: Message: The browser appears to have exited before we could connect. If you specified a log_file in the FirefoxBinary constructor, check it for details.
Given that I have am already using pyvirtualdisplay, does anyone know of a solution?
As per my understanding, Firefox is not build for Headless mechanism [Correct me if I am wrong].
You can use PhantomJs for better handling.
I have installed firefox and Xvfb on my centos6.4 server to use selenium webdriver.
But, when I run the code, I got an error.
from selenium import webdriver
browser = webdriver.Firefox()
Error
selenium.common.exceptions.WebDriverException: Message:
'The browser appears to have exited before we could connect. The output was: None'
I read some related pages on stackoverflow and someone suggested to remove all files in tmp folder, so I did it. But, it still doesn't work.
Could anyone please give me a help?
Thank you in advance!
Edit
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.4/site-packages/selenium/webdriver/firefox/webdriver.py", line 59, in __init__
self.binary, timeout),
File "/usr/local/lib/python3.4/site-packages/selenium/webdriver/firefox/extension_connection.py", line 47, in __init__
self.binary.launch_browser(self.profile)
File "/usr/local/lib/python3.4/site-packages/selenium/webdriver/firefox/firefox_binary.py", line 64, in launch_browser
self._wait_until_connectable()
File "/usr/local/lib/python3.4/site-packages/selenium/webdriver/firefox/firefox_binary.py", line 103, in _wait_until_connectable
self._get_firefox_output())
selenium.common.exceptions.WebDriverException: Message: 'The browser appears to have exited before we could connect. The output was: None'
for Googlers, this answer didn't work for me, and I had to use this answer instead. I am using AWS Ubuntu.
Basically, I needed to install Xvfb and then pyvirtualdisplay:
sudo apt-get install xvfb
sudo pip install pyvirtualdisplay
Once I had done that, this python code worked:
#!/usr/bin/env python
from pyvirtualdisplay import Display
from selenium import webdriver
display = Display(visible=0, size=(1024, 768))
display.start()
browser = webdriver.Firefox()
browser.get('http://www.ubuntu.com/')
print browser.page_source
browser.close()
display.stop()
Thanks to #That1Guy for the first answer
I was running into this on an (headless) Ubuntu 14.04 server with Jenkins and xvfb installed. I had installed the latest stable Firefox (47) which started a build failing that ran a python script which used the Firefox driver for selenium (version 2.53).
Apparently Firefox 47+ is not compatible with the driver used in Selenium 2.53, and Selenium 3+ will be using a new driver called "Marionette" or "Gecko Driver" (which isn't officially released yet).
This page explains how to use the new driver pretty well, in several languages: https://developer.mozilla.org/en-US/docs/Mozilla/QA/Marionette/WebDriver
Basically:
get/build the executable from the project on github: https://github.com/mozilla/geckodriver/releases (and make sure it's perms are set to be executable, IE chmod a+x /path/to/geckdriver-executable)
rename/copy binary to "wires"
make sure the binary's location is added to the PATH that the build uses when executing the selenium test
update the selenium test to use the new driver
For Python, step 4 looked something like the following for me:
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
firefox_capabilities = DesiredCapabilities.FIREFOX
firefox_capabilities['marionette'] = True
firefox_capabilities['binary'] = '/usr/bin/firefox'
driver = webdriver.Firefox(capabilities=firefox_capabilities)
I too had faced same problem. I was on Firefox 47 and Selenium 2.53; I downgraded Firefox to 45. This worked.
Remove Firefox 47 first :
sudo apt-get purge firefox
Check for available versions:
apt-cache show firefox | grep Version
It will show available firefox versions like:
Version: 47.0+build3-0ubuntu0.16.04.1
Version: 45.0.2+build1-0ubuntu1
Install a specific version
sudo apt-get install firefox=45.0.2+build1-0ubuntu1
Next you have to not upgrade to the newer version again.
sudo apt-mark hold firefox
If you want to upgrade later
sudo apt-mark unhold firefox
sudo apt-get upgrade
Check your DISPLAY environment variable. Run echo $DISPLAY in the command line.
If nothing is printed, then you are running FireFox without any DISPLAY assigned. You should assign one! Run export DISPLAY=:1 in the command line before running your python script.
Check this thread for more information: http://hashcat.net/forum/thread-1973.html
I think the simplest solution here is just run Python with xvfb-run:
sudo apt-get install xvfb
xvfb-run python <your_file_or_args>
Rollback your Firefox to the previous working version. I suggest 2 versions back. Disable Firefox Maintenance Service.
I was working on a solution and the Firefox Maintenance Service updated Firefox to the latest build in the background. This broke my code and it was giving me this error.
Now it is fixed!
Thank you everyone!
This error is due to your Xvfb is not running. So restart your xvfb:
Xvfb :99 -ac
then check.
This works for me.
Instead of downgrading firefox from 47 version to 45 or something I'll suggest to upgrade to 47.0.1 or above since they seem to fix an issue.
But if your OS doesn't have new packages in repo (for example Ubuntu 14.04 in time of this answer), you can use debs from ubuntuzilla project:
wget sourceforge.net/projects/ubuntuzilla/files/mozilla/apt/pool/main/f/firefox-mozilla-build/firefox-mozilla-build_47.0.1-0ubuntu1_amd64.deb
sudo dpkg -i firefox-mozilla-build_47.0.1-0ubuntu1_amd64.deb
For x86 use _i386.deb postfix.
That sold problem for me
I fixed this by running a recursive chown against not only the python script using selenium, but against the entire virtualenv that script was running in. I changed the ownership to the user running the file. After that, this error went away.
I also faced the same issue, what I did was:
Upgrade selenium package
sudo pip install -U selenium
Instead of rolling back to older version(like suggested) I rolled up to newer version(48.0, I was previously using V47.0).
(for upgrading follow the instructions given by Toby Speight but instead of choosing older version choose newer version)
I found this solution on Windows 10 Build 18363. I had to call out specifically the Firefoxbinary and the geckdriver executable path.
from selenium import webdriver
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
caps = DesiredCapabilities.FIREFOX.copy()
caps['marionette'] = True
# Path to Firefox binary
binary = FirefoxBinary(r'C:\Program Files\Mozilla Firefox\firefox.exe')
# Browser (driver) binary assigned, capabilities, and executable path for the geckodriver
driver = webdriver.Firefox(firefox_binary=binary, capabilities=caps,
executable_path=r'C:\Users\<name>\python\python-projects\geckodriver-v0.28.0-win64\geckodriver.exe')
# get google.co.in
driver.get("https://google.com")
update your selenuim version ---> pip install -U selenium
It can be solved by changing the file permission of the output file ( or related files to the program).
I used Firefox's webdriver.
Try:
chmod -R 777 output_file
This solved me the same trouble you have.