Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/paymsrpn/more.paymoott.com/core_invapp/vendor/symfony/service-contracts/Test/ServiceLocatorTest.php:18 Stack trace: #0 {main} thrown in /home/paymsrpn/more.paymoott.com/core_invapp/vendor/symfony/service-contracts/Test/ServiceLocatorTest.php on line 18