After successful installation of shurjopay-laravel-package, go to your project and open config folder and then click on app.php file. Append the following line in providers array.

shurjopay\ShurjopayLaravelPackage\ShurjopayServiceProvider::class,

Add this to your controller use shurjopay\ShurjopayLaravelPackage\Http\Controllers\ShurjopayController;
Call payment method $shurjopay_service = new ShurjopayController(); return $shurjopay_service->checkout($info,$school_id);