Fixed order processing, broken after upgrade to Laravel 5.8

app/Models/Service/Adsl.php

@@ -2,8 +2,14 @@
 
 namespace App\Models\Service;
 
+use App\Traits\NextKey;
+
 class Adsl extends \App\Models\Base\ServiceType
 {
+	use NextKey;
+
+	const RECORD_ID = 'service__adsl';
+
 	// @todo column service_id can be removed.
 	protected $table = 'ab_service__adsl';