fix

Author: Rom1-B

inc/field/filefield.class.php

@@ -241,11 +241,13 @@ private function saveDocument($file, $prefix) {
       $entities_id = $form->fields['entities_id'];
       if ($form->fields['is_recursive']) {
          $entities_sons = getSonsOf('glpi_entities', $form->fields['entities_id']);
-         if (in_array($_SESSION['glpiactive_entity'], $entities_sons)) {
+         if (in_array($_SESSION['glpiactive_entity'] ?? 0, $entities_sons)) {
             $entities_id = $_SESSION['glpiactive_entity'];
          }
       }
 
+      $entities_id = $_SESSION['glpiactive_entity'] ?? $form->getField('entities_id');
+
       $file_data = [
          'name'             => Toolbox::addslashes_deep($form->fields['name'] . ' - ' . $this->question->fields['name']),
          'entities_id'      => $entities_id,

inc/formanswer.class.php

@@ -856,11 +856,13 @@ public function prepareInputForAdd($input) {
       $input['entities_id'] = $form->fields['entities_id'];
       if ($form->fields['is_recursive']) {
          $entities_sons = getSonsOf('glpi_entities', $form->fields['entities_id']);
-         if (in_array($_SESSION['glpiactive_entity'], $entities_sons)) {
+         if (in_array($_SESSION['glpiactive_entity'] ?? 0, $entities_sons)) {
             $input['entities_id'] = $_SESSION['glpiactive_entity'];
          }
       }
 
+      $input['entities_id'] = $_SESSION['glpiactive_entity'] ?? $form->getField('entities_id');
+
       $input['is_recursive']                = $form->fields['is_recursive'];
       $input['plugin_formcreator_forms_id'] = $form->getID();
       // requester_id is actually the author