Fix php notices

main/document/document.php

@@ -674,10 +674,12 @@ if (isset($document_id) && empty($action)) {
         true
     );
 
+    if (isset($document_data['parent_id'])) {
         $parent_id = $document_data['parent_id'];
+    }
 }
 
-if (isset($document_data) && $document_data['path'] == '/certificates') {
+if (isset($document_data) && isset($document_data['path']) && $document_data['path'] == '/certificates') {
     $is_certificate_mode = true;
 }
 

main/forum/forumfunction.inc.php

@@ -4334,9 +4334,11 @@ function get_whats_new()
                     access_tool = '".Database::escape_string($tool)."'";
         $result = Database::query($sql);
         $row = Database::fetch_array($result);
+        if (isset($row['access_date'])) {
             Session::write('last_forum_access', $row['access_date']);
             $lastForumAccess = $row['access_date'];
         }
+    }
 
     $whatsNew = Session::read('whatsnew_post_info');