FeatureContext.php

    /** @AfterStep */
    public function showContentAfterFailure(StepEvent $event)
    {
        try {
            if ($event->hasException()) {
                $this->saveScreenshot(
                    sprintf(
                        'screenshot-%s-%s.png',
                        date('Y-m-d_h-i-s', time()),
                        str_replace(' ', '_', $event->getLogicalParent()->getTitle())
                    ),
                    '/source'
                );
            }
        } catch (UnsupportedDriverActionException $exception) {
            // Screenshot will not be saved for contexts that do not
            // support screenshots.
            // $this->printLastResponse();
        }
    }