update

app/Services/RebateService.php

@@ -54,7 +54,7 @@ class RebateService extends BaseService
      */
     public static function findOne(array $search): ?Rebate
     {
-        return self::model()::where(self::getWhere($search))->first();
+        return self::model()::where(static::getWhere($search))->first();
     }
 
     /**