Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/noct-c/www/tanakahashi/vendor/facade/ignition-contracts/Tests/SolutionTest.php:8 Stack trace: #0 {main} thrown in /home/noct-c/www/tanakahashi/vendor/facade/ignition-contracts/Tests/SolutionTest.php on line 8