Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp73\htdocs\Respaldos\tracking_cie_v1\vendor\sebastian\comparator\tests\ArrayComparatorTest.php:21 Stack trace: #0 {main} thrown in C:\xampp73\htdocs\Respaldos\tracking_cie_v1\vendor\sebastian\comparator\tests\ArrayComparatorTest.php on line 21