Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/smagamf/chloe_garden/vendor/symfony/stopwatch/Tests/StopwatchPeriodTest.php:17 Stack trace: #0 {main} thrown in /home/smagamf/chloe_garden/vendor/symfony/stopwatch/Tests/StopwatchPeriodTest.php on line 17