Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/salkanta/test.api.salkantay-trekking.com/vendor/phpunit/php-timer/tests/TimerTest.php:17 Stack trace: #0 {main} thrown in /home/salkanta/test.api.salkantay-trekking.com/vendor/phpunit/php-timer/tests/TimerTest.php on line 17