Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/interweavesoluti/desktop.interweavesolutions.org/vendor/symfony/security-core/Tests/User/ChainUserProviderTest.php:19 Stack trace: #0 {main} thrown in /home/interweavesoluti/desktop.interweavesolutions.org/vendor/symfony/security-core/Tests/User/ChainUserProviderTest.php on line 19