Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /var/www/app/appregwebservice/vendor/psr/log/Psr/Log/Test/LoggerInterfaceTest.php:15 Stack trace: #0 {main} thrown in /var/www/app/appregwebservice/vendor/psr/log/Psr/Log/Test/LoggerInterfaceTest.php on line 15