Error message

• Notice: Undefined index: langcode in schliesing_sitemap_page() (line 32 of /homepages/35/d83653831/htdocs/_new/sites/default/modules/schliesing_sitemap/schliesing_sitemap.module).
• Notice: Undefined index: langcode in schliesing_sitemap_page() (line 32 of /homepages/35/d83653831/htdocs/_new/sites/default/modules/schliesing_sitemap/schliesing_sitemap.module).
• Notice: Undefined index: langcode in schliesing_sitemap_page() (line 32 of /homepages/35/d83653831/htdocs/_new/sites/default/modules/schliesing_sitemap/schliesing_sitemap.module).