Minor - format code, fix PHP warning

main/admin/user_update_import.php

@@ -6,7 +6,6 @@
  * This tool allows platform admins to add users by uploading a CSV or XML file.
  */
 
-use Ddeboer\DataImport\Reader\CsvReader;
 use Symfony\Component\DomCrawler\Crawler;
 
 $cidReset = true;
@@ -95,7 +94,6 @@ function updateUsers(
     $sendEmail = false)
 {
     $usergroup = new UserGroup();
-
     if (is_array($users)) {
         foreach ($users as $user) {
             if (isset($user['Status'])) {

main/forum/index.php

@@ -273,7 +273,7 @@ if (is_array($forumCategories)) {
         } else {
             $forumCategoryInfo['title'] = $forumCategory['cat_title'];
         }
-        $forumCategoryInfo['extra_fields'] = $forumCategory['extra_fields'];
+        $forumCategoryInfo['extra_fields'] = isset($forumCategory['extra_fields']) ? $forumCategory['extra_fields'] : [];
         $forumCategoryInfo['icon_session'] = api_get_session_image($forumCategory['session_id'], $_user['status']);
 
         // Validation when belongs to a session