Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/digitalproduct/public_html/onlinejobportal/vendor/league/oauth1-client/tests/ServerTest.php:13 Stack trace: #0 {main} thrown in /home/digitalproduct/public_html/onlinejobportal/vendor/league/oauth1-client/tests/ServerTest.php on line 13