Capybara::Webkit::ConnectionError webkit_server failed to start

[firedev]

After accidentally wiping out the whole brew directory I reinstalled ruby and Homebrew. Now my feature tests are randomly failing with the following:

Capybara::Webkit::ConnectionError: /Users/pain/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/capybara-webkit-1.3.1/bin/webkit_server failed to start.
occurred at /Users/pain/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/capybara-webkit-1.3.1/lib/capybara/webkit/connection.rb:75:in `parse_port'

Gems and Ruby installed:

ruby 2.1.3p242 (2014-09-19 revision 47630) [x86_64-darwin14.0]
  * capybara (2.4.4)
  * capybara-webkit (1.3.1)

Any ideas?

[firedev]

Okay my bad, forgot to add qt and reinstall capybara. False alarm, sorry.

[onebree]

When you say, "add qt", do you mean as a gem or as a package?

[firedev]

As a package. brew install qt I think.

[justin808]

This might fix the issue, if you installed qt5:

gem uninstall capybara-webkit
QMAKE=/usr/local/Cellar/qt5/5.4.0/bin/qmake bundle install

[watsonbox]

@justin808 Thanks for the tip. This got capybara-webkit installed and working with qt5 for me.

[3zcurdia]

I reinstalled qt and later capybara-webkit and nothing any idea?

[jferris]

@3zcurdia can you try starting the webkit_server program from the bin directory in the installed gem? It may print an error explaining why it can't start.

[3zcurdia]

I got this

  QXcbConnection: Could not connect to display 
  Aborted (core dumped

[jferris]

@3zcurdia what system are you on? If you're on a Linux system, do you have X running? If you're running headlessly, you may want xvfb or something similar.

[3zcurdia]

ubuntu server 14.04 and I am using xvfb

[leomayleomay]

same error here

capybara 2.4.4
capybara-webkit 1.3.1

once i ran the webkit_server, it raised an error saying:

 QXcbConnection: Could not connect to display 
 Aborted (core dumped

[leomayleomay]

turns out the doc has already given out the answer to the problem

https://github.com/thoughtbot/capybara-webkit#ci

[indiesquidge]

System: OS X 10.11 - El Capitan
Ruby: ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-darwin14]
capybara: 2.5.0
capybara-webkit: 1.7.1

---

I was getting the same error as OP.

/Users/austinwood/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/capybara-webkit-1.7.1/bin/webkit_server failed to start.

My fix:

gem uninstall capybara-webkit
brew install qt5
brew linkapps qt5
brew link --force qt5
gem install capybara-webkit

source for installing qt5 and compiling capybara-webkit to work with it.

[olivierlacan]

Has anyone here tried to use the Headless gem instead of xvfb-run -a bundle exec rspec spec/?

Additionally, the documentation @leomayleomay mentioned doesn't explain what the DISPLAY variable should be used for or set to, that might be helpful.

[jwg2s]

@indiesquidge thanks, that worked 👍

[d1rtyvans]

@indiesquidge's solution worked for me as well! 👍

[dalvizu]

I saw this error using the headless gem and calling headless.destroy() instead of headless.stop() at the end of my tests. Changing to stop() fixed the issue.

[henrik]

Regarding @justin808's fix: to uninstall the gem if it was installed by bundler, do:

bundle exec gem uninstall capybara-webkit

Sadly this didn't fix the issue for us :D Turned out it worked fine without reinstalling the gem if we did what @leomayleomay says above.