diff --git a/app/Http/Resources/TransactionWithStorageResource.php b/app/Http/Resources/TransactionWithStorageResource.php
index 52f35fdf..4b3a377c 100644
--- a/app/Http/Resources/TransactionWithStorageResource.php
+++ b/app/Http/Resources/TransactionWithStorageResource.php
@@ -147,7 +147,7 @@ class TransactionWithStorageResource extends JsonResource
     }
 
     private function getReferenceForGroupPayment($groups){
-        if(count($groups)){
+        if (is_array($groups) && count($groups) > 0) {
             $firstGroup = $groups[0];
             return $firstGroup['reference'];
         }