Thanks John, appreciate you time…

I stop the error “Error retrieving data source: Content” by unpublishing “Content” in —>Administration —> Sitemap Data Sources

Before, at first, in the same —> Administration —> Sitemap Data Sources —> Content I selected ALL Categories in “Exclude articles categories” because unpublished articles was showing up on the site map, but I leave the Data sources —> Content publish (Was generating the error)

Where the error come from ?
Is this normal behaviour when Data Sources —Content — Categories are shown in the siteMap to show unpublished articles & if there is a way to control that?