Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp73\htdocs\MonitoresCIE_C\vendor\sebastian\comparator\tests\ObjectComparatorTest.php:22 Stack trace: #0 {main} thrown in C:\xampp73\htdocs\MonitoresCIE_C\vendor\sebastian\comparator\tests\ObjectComparatorTest.php on line 22