Fatal error: Uncaught Error: Class 'Illuminate\Database\Eloquent\Relations\BelongsToMany' not found in /Users/caiosilva/Sites/Laravel-test/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Relations/MorphToMany.php:9 Stack trace: #0 {main} thrown in /Users/caiosilva/Sites/Laravel-test/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Relations/MorphToMany.php on line 9