Capybara::Poltergeist::TimeoutError

Timed out waiting for response to {"name":"visit","args":["http://127.0.0.1:54242/"]}. 
It's possible that this happened because something
took a very long time (for example a page load was slow). 
If so, setting the Poltergeist :timeout
 option to a higher value will help (see the docs for details). If increasing the timeout does not help, this is probably a bug in Poltergeist - please report it to the issue tracker. (Capybara::Poltergeist::TimeoutError)

While working with Capybara feature specs and Poltergeist, you may have encountered this error before. You also probably tried bumping up the timeout value to no avail. I found a surprisingly easy fix for this issue - update your Poltergeist gem and update PhantomJS to version 2.0! After I did these two things, most of these errors went away.

If you are still having issues after that, read through this issue and see if a solution there helps.