SymfonyTestsListener does not exist on PHP Unit Test When I try to run a unit test I get an error that SymfonyTestsListener does not exist.  Am I running this correctly?  

../../vendor/bin/phpunit -c phpunit.xml ../modules/custom/my_module/

Class "Symfony\Bridge\PhpUnit\SymfonyTestsListener" does not exist


I am using PHPUnit 6.5.13.
Had a similar issue:
Solved it by adding the "symfony/phpunit-bridge": "^3.4.3" library.