Fatal error: Uncaught Error: Interface "Carbon\Constants\DiffOptions" not found in C:\WebServer\htdocs\bookshelf\vendor\nesbot\carbon\src\Carbon\CarbonInterface.php:858 Stack trace: #0 {main} thrown in C:\WebServer\htdocs\bookshelf\vendor\nesbot\carbon\src\Carbon\CarbonInterface.php on line 858