Fatal error: Uncaught Error: Class "Illuminate\Support\ServiceProvider" not found in /home/techguruuico/public_html/mailuai.com/vendor/mettle/sendportal-core/src/SendportalBaseServiceProvider.php:16 Stack trace: #0 {main} thrown in /home/techguruuico/public_html/mailuai.com/vendor/mettle/sendportal-core/src/SendportalBaseServiceProvider.php on line 16