diff --git a/application/WorkorderTenantConfig/WorkorderTenantConfigModel.php b/application/WorkorderTenantConfig/WorkorderTenantConfigModel.php
index 0c3d8f922..c813a3265 100644
--- a/application/WorkorderTenantConfig/WorkorderTenantConfigModel.php
+++ b/application/WorkorderTenantConfig/WorkorderTenantConfigModel.php
@@ -25,7 +25,8 @@ class WorkorderTenantConfigModel extends TTCrudBaseModel {
             JOIN `$dbName`.`Preorder` p ON pc.id = p.preordercampaign_id
             WHERE p.id = '$preorderId' LIMIT 1";
 
-        $row = $db->query($sql)?->fetch_assoc();
+        $result = $db->query($sql);
+        $row = $result ? $result->fetch_assoc() : null;
 
         return $row ? new self($row) : null;
-    }}
\ No newline at end of file
+    }}