diff --git a/app/Classes/Modules/Transactions/Processors/CreateInvoiceTransactionProcessor.php b/app/Classes/Modules/Transactions/Processors/CreateInvoiceTransactionProcessor.php
index 799032ab..afacb35f 100644
--- a/app/Classes/Modules/Transactions/Processors/CreateInvoiceTransactionProcessor.php
+++ b/app/Classes/Modules/Transactions/Processors/CreateInvoiceTransactionProcessor.php
@@ -22,6 +22,7 @@ use App\Classes\ValueObjects\Constants\KVPKey;
 use App\Models\Booking;
 use App\Models\SegmentConstant;
 use Carbon\Carbon;
+use Exception;
 use Illuminate\Support\Facades\Log;
 
 class CreateInvoiceTransactionProcessor
@@ -214,8 +215,23 @@ class CreateInvoiceTransactionProcessor
 
         $booking_currency_average_rate = $this->calculatesBookingCurrencyAverageRate->execute($booking, TransactionType::BILL);
 
-        $transaction = $booking->transactions()->payments()->where('status', ApprovalStatus::COMPLETED)->first()
-            ->transactions()->where('type', TransactionType::BILL)->first();
+        $paymentTransaction = $booking->transactions()->payments()->where('status', ApprovalStatus::COMPLETED)->first();
+
+        $transaction = null;
+        if($paymentTransaction){
+            $transaction = $paymentTransaction->transactions()->where('type', TransactionType::BILL)->first();
+        }
+        else{ // Special handling for refund cases (When a refund is deleted via DeleteRefundTransactionLogic, a booking payment transaction is set to ApprovalStatus::APPROVED)
+            $temp = $booking->transactions()->payments()->where('status', ApprovalStatus::APPROVED)->first();
+            // Lets check if there is a refund case
+            $refund = $temp->transactions()->refunds()->where('status', ApprovalStatus::APPROVED)->first();
+            if($refund){
+                $transaction = $temp;
+            }
+            else{
+                throw new Exception("No payment found for booking '$booking->id'.");
+            }
+        }
 
         $transaction_object = new TransactionObject(
             $billNumber,