save screenshot and document on behat test fail

saveScreenshotAndContent.php

<?php
use Behat\MinkExtension\Context\MinkContext;
class BaseContext extends MinkContext
{
    ...
    ...

    /*
     * @AfterStep
     */
    private function logErrors(AfterStepScope $event)
    {
        $driver = $this->getSession()->getDriver();
        $screenshot = $driver->getWebDriverSession()->screenshot();
        $fileName = $file = mb_ereg_replace("([^\w\s\d\-_~,;\[\]\(\).])", '', $event->getStep()->getText());
        $content = $this->getSession()->getPage()->getContent();
        
        if ($event->getTestResult()->getResultCode() == TestResult::FAILED) {
            $this->saveDocument($fileName, $content);
            $thi->saveScreenShot($fileName, $screenshot);
        }
    }
}