Fix date handling in KyteErrorController to support both Unix timestamps and formatted strings

Author: kennethphough

src/Mvc/Controller/KyteErrorController.php

@@ -148,7 +148,13 @@ public function hook_response_data($method, $o, &$r = null, &$d = null) {
 
             // Add human-readable date
             if (isset($o->date_created)) {
-                $o->date_created_formatted = date($this->dateformat, $o->date_created);
+                // Handle both Unix timestamps (integer) and already-formatted strings
+                if (is_numeric($o->date_created)) {
+                    $o->date_created_formatted = date($this->dateformat, $o->date_created);
+                } else {
+                    // Already formatted, use as-is
+                    $o->date_created_formatted = $o->date_created;
+                }
             }
         }
     }