Fatal error: Uncaught ReflectionException: Class "PHPUnit\Framework\TestCase" does not exist in C:\Apache24\htdocs\cw\vendor\symfony\validator\Test\ForwardCompatTestTrait.php:18 Stack trace: #0 C:\Apache24\htdocs\cw\vendor\symfony\validator\Test\ForwardCompatTestTrait.php(18): ReflectionMethod->__construct('PHPUnit\\Framewo...', 'tearDown') #1 {main} thrown in C:\Apache24\htdocs\cw\vendor\symfony\validator\Test\ForwardCompatTestTrait.php on line 18