Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\astra-backoffice\vendor\guzzlehttp\guzzle\tests\Handler\CurlHandlerTest.php:18
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\astra-backoffice\vendor\guzzlehttp\guzzle\tests\Handler\CurlHandlerTest.php on line 18