Fatal error: Uncaught Error: Class "Http\Client\Tests\HttpClientTest" not found in D:\xampp\htdocs\SSWPOS\vendor\guzzlehttp\guzzle\tests\HttplugIntegrationTest.php:12 Stack trace: #0 {main} thrown in D:\xampp\htdocs\SSWPOS\vendor\guzzlehttp\guzzle\tests\HttplugIntegrationTest.php on line 12