PHP Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuess

[vinothkumad8bb]

I am using Magento 2.3.4,MFTF 2.6.3 and ChromeDriver 83.0.4103.39. When I run any test case using the command "C:\xampp\htdocs\Magento\vendor\bin>mftf run:test StorefrontUpdateWishlistTest --remove" I am getting the below error:

Actual: MFTF tests launching but url not entering in browser and all test cases are getting failed

Error logs:

Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesser' not found in C:\xampp\htdocs\Magento\vendor\magento\magento2-functional-testing-framework\src\Magento\FunctionalTestingFramework\Allure\Event\AddUniqueAttachmentEvent.php:76
Stack trace:
#0 C:\xampp\htdocs\Magento\vendor\magento\magento2-functional-testing-framework\src\Magento\FunctionalTestingFramework\Allure\Event\AddUniqueAttachmentEvent.php(43): Magento\FunctionalTestingFramework\Allure\Event\AddUniqueAttachmentEvent->guessFileMimeType('C:\\Users\\emb-vi...')
#1 C:\xampp\htdocs\Magento\vendor\allure-framework\allure-php-api\src\Yandex\Allure\Adapter\Event\AddAttachmentEvent.php(35): Magento\FunctionalTestingFramework\Allure\Event\AddUniqueAttachmentEvent->getAttachmentFileName(Object(PHPUnit\Framework\ExceptionWrapper), NULL)
#2 C:\xampp\htdocs\Magento\vendor\allure-framework\allure-php-api\src\Yandex\Allure\Adapter\Allure.php(116): Yandex\Allure\Adapter\Event\AddAttachmentEvent->process(Object(Yandex\Allure\Adapter\Mo in C:\xampp\htdocs\Magento\vendor\magento\magento2-functional-testing-framework\src\Magento\FunctionalTestingFramework\Allure\Event\AddUniqueAttachmentEvent.php on line 76

Could you pleas check this issue. Any help is really appreciated

[gaurav_harsh1]

Hello @vinothkumad8bb 

Can you share your PHP version? and please check the Magento requirement if your setup is compatible with it.

[vinothkumad8bb]

Hi @gaurav_harsh1 

PHP version 7.2.30

Magento 2.3.4

[maksym_a]

Check version of 

composer show symfony/http-foundation

If it is 5.1.5 you may try to downgrade it 

composer require symfony/http-foundation=<5.1

(That class removed in symfony/http-foundation=5.1.x so you need to use earlier version)