Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /www/wwwroot/base.code.treexhd.me/VSCode/laravel/covid/vendor/paragonie/constant_time_encoding/tests/Base64UrlSafeTest.php:9 Stack trace: #0 {main} thrown in /www/wwwroot/base.code.treexhd.me/VSCode/laravel/covid/vendor/paragonie/constant_time_encoding/tests/Base64UrlSafeTest.php on line 9