diff --git a/hesabixCore/src/Service/Explore.php b/hesabixCore/src/Service/Explore.php
index 44fea77..9a3d963 100644
--- a/hesabixCore/src/Service/Explore.php
+++ b/hesabixCore/src/Service/Explore.php
@@ -475,8 +475,10 @@ class Explore
             return null;
         $jdate = new Jdate;
         $label = '';
-        if ($cheque->getType() == 'input')
-            $label = 'چک شماره ' . $cheque->getNumber() . ' مربوط به ' . $cheque->getPerson()->getNikename() . ' با مبلغ ' . $cheque->getAmount();
+        if ($cheque->getType() == 'input') {
+            $personName = $cheque->getPerson() ? $cheque->getPerson()->getNikename() : 'نامشخص';
+            $label = 'چک شماره ' . $cheque->getNumber() . ' مربوط به ' . $personName . ' با مبلغ ' . $cheque->getAmount();
+        }
         return [
             'id' => $cheque->getId(),
             'number' => $cheque->getNumber(),
@@ -727,4 +729,4 @@ class Explore
             'upper' => $item->getUpper()
         ];
     }
-}
+}
\ No newline at end of file