Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in D:\xampp\htdocs\SSWPOS\vendor\google\cloud-core\tests\Unit\Batch\BatchTraitTest.php:33 Stack trace: #0 {main} thrown in D:\xampp\htdocs\SSWPOS\vendor\google\cloud-core\tests\Unit\Batch\BatchTraitTest.php on line 33