Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/lumultra/public_html/__subdomains/openai/vendor/tectalic/openai/tests/Integration/Handlers/ImagesVariationsTest.php:25 Stack trace: #0 {main} thrown in /home/lumultra/public_html/__subdomains/openai/vendor/tectalic/openai/tests/Integration/Handlers/ImagesVariationsTest.php on line 25