Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/noct-c/www/tanakahashi/vendor/sebastian/comparator/tests/ArrayComparatorTest.php:21 Stack trace: #0 {main} thrown in /home/noct-c/www/tanakahashi/vendor/sebastian/comparator/tests/ArrayComparatorTest.php on line 21