Fatal error: Uncaught Error: Class 'Illuminate\Support\Collection' not found in /home/turet/public_html/xtestgames/vendor/spatie/laravel-newsletter/src/NewsletterListCollection.php:8 Stack trace: #0 {main} thrown in /home/turet/public_html/xtestgames/vendor/spatie/laravel-newsletter/src/NewsletterListCollection.php on line 8