Fatal error: Uncaught Error: Interface 'Nikolag\Core\Contracts\PaymentServiceContract' not found in /home/demohatinco/public_html/petmates_backend/vendor/nikolag/laravel-square/src/contracts/SquareServiceContract.php:7 Stack trace: #0 {main} thrown in /home/demohatinco/public_html/petmates_backend/vendor/nikolag/laravel-square/src/contracts/SquareServiceContract.php on line 7