Laravel Symfony Call to undefined function

[pbs-mreverman]

'Symfony\Component\Debug\Exception\FatalErrorException' with message 'Call to undefined function Swagger\scan()' in /jlapp/swaggervel/src/Jlapp/Swaggervel/routes.php:37

[Mloweedgar]

I have Expericenced the same error after running composer update: FatalThrowableError in routes.php line 37:
Call to undefined function Swagger\scan()

[GaurangGhinaiya]

I have same error with Laravel version 5.7. Is anybody has solution for that.

[nimrutta]

I experienced the same error here, in my case running

composer require zircote/swagger-php:2.*

resolved the issue.