Fatal error: Uncaught Error: Class 'PHPUnit_Framework_MockObject_Matcher_StatelessInvocation' not found in /home/app/htdocs/message_gateway/vendor/phpunit/phpunit-mock-objects/src/Framework/MockObject/Matcher/MethodName.php:20 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway/vendor/phpunit/phpunit-mock-objects/src/Framework/MockObject/Matcher/MethodName.php on line 20