Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in C:\xampp\htdocs\cms-propay\vendor\league\flysystem-cached-adapter\tests\AdapterCacheTests.php:5 Stack trace: #0 {main} thrown in C:\xampp\htdocs\cms-propay\vendor\league\flysystem-cached-adapter\tests\AdapterCacheTests.php on line 5