Fatal error: Uncaught Error: Trait "Carbon\Traits\ToStringFormat" not found in /home/prooyavi/laravel/laravel/vendor/nesbot/carbon/src/Carbon/Traits/Converter.php:36 Stack trace: #0 {main} thrown in /home/prooyavi/laravel/laravel/vendor/nesbot/carbon/src/Carbon/Traits/Converter.php on line 36