Fatal error: Uncaught Error: Trait "Webmozart\Assert\Mixin" not found in /home/prooyavi/laravel/laravel/vendor/webmozart/assert/src/Assert.php:33 Stack trace: #0 {main} thrown in /home/prooyavi/laravel/laravel/vendor/webmozart/assert/src/Assert.php on line 33