Fatal error: Uncaught Error: Interface "PHPUnit\Runner\Extension\Extension" not found in /home/bimmertest/BookStack/vendor/itsgoingd/clockwork/Clockwork/Support/Laravel/Tests/ClockworkExtension.php:12 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/vendor/itsgoingd/clockwork/Clockwork/Support/Laravel/Tests/ClockworkExtension.php on line 12