diff --git a/lib/TTCrud/TTCrud.php b/lib/TTCrud/TTCrud.php
index a79537acb..7c963e1c3 100644
--- a/lib/TTCrud/TTCrud.php
+++ b/lib/TTCrud/TTCrud.php
@@ -89,7 +89,11 @@ class TTCrud extends mfBaseController {
         }
 
         $column = array_search('createBy', array_column($this->columns, 'key'));
-        if ($column !== false) {
+        if ($column !== false && 
+        isset($this->columns[$column]['modal']['items']) &&
+        is_array($this->columns[$column]['modal']['items']) &&
+        count($this->columns[$column]['modal']['items']) > 0       
+        ) {
             $this->columns[$column]['modal']['items'] = array_map(function ($user) {
                 return ['value' => intval($user->id), 'text' => $user->name];
             }, UserModel::search(['employee' => true]));