Add auto bill enabled to transformer

app/Models/Invoice.php

@@ -92,6 +92,7 @@ class Invoice extends BaseModel
         'assigned_user_id',
         'exchange_rate',
         'subscription_id',
+        'auto_bill_enabled',
     ];
 
     protected $casts = [

app/Transformers/InvoiceTransformer.php

@@ -154,7 +154,7 @@ class InvoiceTransformer extends EntityTransformer
             'reminder_last_sent' => $invoice->reminder_last_sent ?: '',
             'paid_to_date' => (float) $invoice->paid_to_date,
             'subscription_id' => $this->encodePrimaryKey($invoice->subscription_id),
-
+            'auto_bill_enabled' => (bool) $invoice->auto_bill_enabled,
         ];
     }
 }