Fatal error: Uncaught Error: Class 'Illuminate\Database\Eloquent\Relations\BelongsToMany' not found in /data/htmlwww/laravel-system/vendor/genealabs/laravel-model-caching/src/CachedBelongsToMany.php:9 Stack trace: #0 {main} thrown in /data/htmlwww/laravel-system/vendor/genealabs/laravel-model-caching/src/CachedBelongsToMany.php on line 9