Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in D:\htdocs\SuiteCRM\vendor\willdurand\negotiation\tests\Negotiation\Tests\TestCase.php:7 Stack trace: #0 {main} thrown in D:\htdocs\SuiteCRM\vendor\willdurand\negotiation\tests\Negotiation\Tests\TestCase.php on line 7