Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\r10ca\vendor\doctrine\dbal\tests\Driver\IBMDB2\DataSourceNameTest.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\r10ca\vendor\doctrine\dbal\tests\Driver\IBMDB2\DataSourceNameTest.php on line 8