--- /var/aegir/hostmaster-7.x-3.192+nmu1/modules/field/field.form.inc   2023-12-06 15:25:06.000000000 +0100
+++ field.form.inc      2024-02-20 12:11:12.437834696 +0100
@@ -74,7 +74,7 @@
     $field_state = array(
       'field' => $field,
       'instance' => $instance,
-      'items_count' => count($items),
+      'items_count' => count((array) $items),
       'array_parents' => array(),
       'errors' => array(),
     );