Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/mountain/public_html/vendor/web-token/jwt-signature-algorithm-hmac/Tests/HMACSignatureTest.php:26 Stack trace: #0 {main} thrown in /home/mountain/public_html/vendor/web-token/jwt-signature-algorithm-hmac/Tests/HMACSignatureTest.php on line 26