Fatal error: Uncaught Error: Class "Carbon\CarbonPeriod" not found in I:\www\php_vendor_tests\vendor\nesbot\carbon\src\Carbon\CarbonPeriodImmutable.php:16 Stack trace: #0 {main} thrown in I:\www\php_vendor_tests\vendor\nesbot\carbon\src\Carbon\CarbonPeriodImmutable.php on line 16