Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/flexinettek/public_html/vendor/lcobucci/jwt/test/unit/Signer/BaseSignerTest.php:16 Stack trace: #0 {main} thrown in /home/flexinettek/public_html/vendor/lcobucci/jwt/test/unit/Signer/BaseSignerTest.php on line 16