Fatal error: Uncaught Error: Class 'Carbon\Carbon' not found in /var/www/html/test-project/my-app/vendor/laravel/framework/src/Illuminate/Support/Carbon.php:8 Stack trace: #0 {main} thrown in /var/www/html/test-project/my-app/vendor/laravel/framework/src/Illuminate/Support/Carbon.php on line 8