issue with autolinks notice in site and rss feed

Hi !

strange notice since few weeks in ISEO :

Notice: Use of undefined constant WDS_SITEMAP_SKIP_TIME_LIMIT_SETTING – assumed ‘WDS_SITEMAP_SKIP_TIME_LIMIT_SETTING’ in public_html/wp-content/plugins/wpmu-dev-seo/wds-files/wds-sitemaps/wds-sitemaps.php on line 42

The notice appears :

– when accessing SEO options

– when changing something with the quick edit option page/post

– in the rss feed.

Ideas anyone ?