Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\ApiSigestWin\1.20.01.20.4\vendor\symfony\intl\Tests\Data\Util\RingBufferTest.php:20 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\1.20.01.20.4\vendor\symfony\intl\Tests\Data\Util\RingBufferTest.php on line 20