Fatal error: Uncaught Error: Class 'SebastianBergmann\Comparator\ObjectComparator' not found in C:\xampp\htdocs\laravel-firebird-update\vendor\phpspec\prophecy\src\Prophecy\Comparator\ProphecyComparator.php:20 Stack trace: #0 {main} thrown in C:\xampp\htdocs\laravel-firebird-update\vendor\phpspec\prophecy\src\Prophecy\Comparator\ProphecyComparator.php on line 20