Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /usr/local/var/www/megatron/vendor/webklex/php-imap/tests/issues/Issue420Test.php:19 Stack trace: #0 {main} thrown in /usr/local/var/www/megatron/vendor/webklex/php-imap/tests/issues/Issue420Test.php on line 19