Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Relations\BelongsToMany" not found in /home/robc3686/public_html/stock-management.robbybirham.id/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Relations/MorphToMany.php:18 Stack trace: #0 {main} thrown in /home/robc3686/public_html/stock-management.robbybirham.id/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Relations/MorphToMany.php on line 18