FeatureContext.php

<?php

use Behat\Behat\Context\Context;
use Behat\Behat\Context\SnippetAcceptingContext;
use Behat\Gherkin\Node\PyStringNode;
use Behat\Gherkin\Node\TableNode;

/**
 * Defines application features from the specific context.
 */
class FeatureContext implements Context, SnippetAcceptingContext
{
    /**
     * @When Log exception
     */
    public function logException()
    {
        $logger = new \Monolog\Logger('default');

        $path = tmpfile();
        $defaultLog = new \Monolog\Handler\StreamHandler($path, \Monolog\Logger::DEBUG);
        $logger->pushHandler($defaultLog);

        $exception = new \Exception();
        $message = "exception: " . $exception->getMessage();
        $context = [
            'exception' => $exception,
            'trace'     => $exception->getTrace()
        ];

        $logger->addInfo($message, $context);
    }
}

I got notice: Notice: Undefined offset: 2 in /var/www/test/vendor/behat/behat/src/Behat/Testwork/Specification/GroupedSpecificationIterator.php on line 98

and fatal error: Fatal error: Call to a member function next() on a non-object in /var/www/test/vendor/behat/behat/src/Behat/Testwork/Specification/GroupedSpecificationIterator.php on line 98