diff --git a/app/Http/Controllers/ClientPortal/PaymentController.php b/app/Http/Controllers/ClientPortal/PaymentController.php
index adc7f4408cda..7e78b6aceeef 100644
--- a/app/Http/Controllers/ClientPortal/PaymentController.php
+++ b/app/Http/Controllers/ClientPortal/PaymentController.php
@@ -319,7 +319,8 @@ class PaymentController extends Controller
      * @return Response         The response view
      */
     public function credit_response(Request $request)
-    {
+    {   
+        
         $payment_hash = PaymentHash::whereRaw('BINARY `hash`= ?', [$request->input('payment_hash')])->first();
 
         /* Hydrate the $payment */
diff --git a/app/Services/Subscription/SubscriptionService.php b/app/Services/Subscription/SubscriptionService.php
index 6960b8dd73ae..348b0573938e 100644
--- a/app/Services/Subscription/SubscriptionService.php
+++ b/app/Services/Subscription/SubscriptionService.php
@@ -309,6 +309,9 @@ class SubscriptionService
      */
     private function calculateProRataRefundItems($invoice, $is_credit = false) :array
     {
+        if(!$invoice)
+            return [];
+
         /* depending on whether we are creating an invoice or a credit*/
         $multiplier = $is_credit ? 1 : -1;
 
@@ -444,6 +447,8 @@ class SubscriptionService
                                          ->withTrashed()
                                          ->orderBy('id', 'desc')
                                          ->first();
+        if(!$last_invoice)
+            return true;
 
         if($last_invoice->balance > 0)
         {
@@ -489,7 +494,10 @@ class SubscriptionService
                                          ->orderBy('id', 'desc')
                                          ->first();
 
-        if($last_invoice->balance > 0)
+        if(!$last_invoice){
+            //do nothing
+        }
+        else if($last_invoice->balance > 0)
         {
             $pro_rata_charge_amount = $this->calculateProRataCharge($last_invoice, $old_subscription);
             nlog("pro rata charge = {$pro_rata_charge_amount}");
@@ -514,7 +522,7 @@ class SubscriptionService
      */
     private function handlePlanChange($payment_hash)
     {
-
+nlog("handle plan change");
         $old_recurring_invoice = RecurringInvoice::find($payment_hash->data->billing_context->recurring_invoice);
 
         $recurring_invoice = $this->createNewRecurringInvoice($old_recurring_invoice);
diff --git a/config/ninja.php b/config/ninja.php
index d0afe5adc806..675ce11ae92d 100644
--- a/config/ninja.php
+++ b/config/ninja.php
@@ -15,7 +15,7 @@ return [
     'app_url' => rtrim(env('APP_URL', ''), '/'),
     'app_domain' => env('APP_DOMAIN', 'invoicing.co'),
     'app_version' => '5.2.7',
-    'app_tag' => '5.2.7-release',
+    'app_tag' => '5.2.7',
     'minimum_client_version' => '5.0.16',
     'terms_version' => '1.0.1',
     'api_secret' => env('API_SECRET', ''),