Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /var/www/html/stz-api/vendor/ringcentral/psr7/tests/UriTest.php:9 Stack trace: #0 {main} thrown in /var/www/html/stz-api/vendor/ringcentral/psr7/tests/UriTest.php on line 9