Class 'Doctrine\Inflector\InflectorFactory' not found

I have a Laravel project in production running in the Laravel version in 5.5.50

One of the team member made some changes to the code and pushed the code. And later when I pulled the code and run it. It generated an error

Interface 'Symfony\Component\Translation\Formatter\IntlFormatterInterface' not found

I solved this. The front end of the project worked fine. When I needed to login to the admin dashboard,the register page works fine. But when I submit the login credential I get the following error

FatalThrowableError (E_ERROR)
Class 'Doctrine\Inflector\InflectorFactory' not found

And I am not able to solve this. I tried composer update, the composer does get updated but the error is still there. The project worked just fine before the pull.

via Chebli Mohamed